CN112321361A - Synergistic stable nitrogenous fertilizer and preparation method thereof - Google Patents
Synergistic stable nitrogenous fertilizer and preparation method thereof Download PDFInfo
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- CN112321361A CN112321361A CN202011437035.3A CN202011437035A CN112321361A CN 112321361 A CN112321361 A CN 112321361A CN 202011437035 A CN202011437035 A CN 202011437035A CN 112321361 A CN112321361 A CN 112321361A
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- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 115
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- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- FIQKRKMICFAHCT-UHFFFAOYSA-N urea;zinc Chemical compound [Zn].NC(N)=O FIQKRKMICFAHCT-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/005—Post-treatment
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Chemical & Material Sciences (AREA)
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- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
本发明是一种增效稳定性氮肥肥料及制备方法。肥料成分包括氮肥、中微量元素、氮素调节增效剂(脲酶抑制剂和/或硝化抑制剂)、碳源增效剂。其中氮肥为尿素，中微量元素包括钙、镁、硫、硼、硅、铁、锌。按重量份数计，其中氮肥、中微量元素、氮素调节增效剂、碳增效剂的重量份数比计＝1：0.05‑0.1：0.001‑0.1：0.1‑0.3，本发明能够通过向肥料中添加一定量的碳增效剂和氮素调节增效剂，调整氮肥释放时间及速率，肥效缓慢平稳，满足作物生长不同时期的多种营养需求，解决作物需肥和土壤供肥之间的矛盾，减少温室气体排放和氮素淋失，是一种新型的增效稳定性氮肥。The invention relates to a synergistic and stable nitrogen fertilizer and a preparation method. The fertilizer components include nitrogen fertilizer, medium and trace elements, nitrogen regulation synergist (urease inhibitor and/or nitrification inhibitor), and carbon source synergist. The nitrogen fertilizer is urea, and the medium and trace elements include calcium, magnesium, sulfur, boron, silicon, iron, and zinc. In parts by weight, the ratio of nitrogen fertilizer, medium and trace elements, nitrogen adjustment synergist, and carbon synergist = 1:0.05-0.1:0.001-0.1:0.1-0.3. A certain amount of carbon synergist and nitrogen regulator synergist are added to the fertilizer to adjust the release time and rate of nitrogen fertilizer, and the fertilizer effect is slow and stable, which can meet the various nutritional needs of crops in different periods of growth, and solve the gap between crop fertilizer demand and soil fertilizer supply. It is a new type of synergistic and stable nitrogen fertilizer, reducing greenhouse gas emissions and nitrogen leaching.
Description
Technical Field
The invention relates to the field of soil and chemical fertilizers, in particular to a stable fertilizer which can provide a certain amount of nitrogen source for soil, can supplement the loss and waste of nitrogen caused by insufficient carbon source, fixes the nitrogen source in the soil in the form of microbial biomass nitrogen and fixed ammonium, promotes the growth of crops, meets the nutritional requirements of the crops in each growth period, and simultaneously can reduce the emission of greenhouse gases and protect the environment.
Background
The nitrogen is one of the essential nutrient elements for the growth of crops, the application of the nitrogen fertilizer plays an important role in improving the yield and the quality of the crops, and the application amount of the nitrogen fertilizer accounts for about 60 percent of the total dosage of the fertilizer. But the utilization rate of nitrogen fertilizer in China is gradually reduced, the utilization rate of the nitrogen fertilizer in the season is only 30% -35%, and the rest nitrogen fertilizer is lost in various forms. By 2012, the utilization rate of nitrogen fertilizer in rice field is only 30-40%, and according to prediction of rice agriculture organization (FAO)2015 of United nations, the world nitrogen fertilizer requirement is close to 1.19 multiplied by 10 in 20218Ton, an average annual increase of 1.4%. The requirement of nitrogen fertilizer is only increased but not reduced in the current form, the utilization rate of nitrogen fertilizer is low, the improvement of the utilization rate of nitrogen fertilizer and the reduction of nitrogen loss are problems to be solved urgently no matter from the aspects of economic benefit and environmental protection, and the production and application of the synergistic stable nitrogen fertilizer are effective strategies for solving the problems.
Aiming at low utilization rate of nitrogen fertilizer, NxThe problem of air pollution caused by serious O release and the problem of underground water pollution caused by nitrogen leaching loss, and the research and development and production of stable fertilizers have made certain progress. A large number of scientific researches show that the control of the conversion of nitrogen in soil through biological and chemical approaches becomes one of effective approaches for improving the utilization rate of nitrogen fertilizers. By adding a biochemical inhibitor into the fertilizer, urea hydrolysis and ammonium nitrification are slowed down, the content of adsorbed ammonium in soil is increased, ammonium oxidation is inhibited, ammonia volatilization and greenhouse gas emission are reduced, and the like. The production of the stable fertilizer has the advantages of low cost, simple process flow, obvious effect of controlling nitrogen conversion, easy large-scale production and the like, and is widely applied and developed in China.
In a farmland ecosystem, soil nitrogen circulation and carbon circulation have inseparable close correlation and are mutually influenced and restricted. In an agricultural ecosystem, the dynamics of soil carbon and nitrogen is a complex biogeochemical process comprising the processes of generation, decomposition, nitration, denitrification and fermentation of organic matters, and the soil carbon-nitrogen ratio can reflect the coupling relation between soil carbon and nitrogen and plays an important role in evaluating the soil quality level. In agricultural production, the carbon input should be increased, the nitrogen input should be reduced, and the carbon-nitrogen balance of soil and the sustainable utilization of soil can be maintained. When the C/N of the soil is low, enough nitrogen can be consumed by the microorganisms, the nitrogen for the microorganisms to assimilate needs to consume more carbon, and the microorganisms need more carbon to maintain the activity under the condition of sufficient nitrogen. Therefore, when the compound fertilizer is applied, a certain amount of carbon source is needed to be applied, so that the loss of nitrogen can be reduced, the utilization rate of the nitrogen is improved, and the nitrogen holding capacity of soil is improved. The denitrification intensity of the soil is related to the mineralization rate of organic carbon in the soil, the denitrification rate is related to the total carbon in the soil, and the denitrification rate is more related to the content of soluble carbon or mineralized carbon. The input of organic carbon is beneficial to the accumulation of soil nitrogen. Long-term positioning tests show that reasonable fertilization can maintain or improve the content of organic carbon and total nitrogen in farmland soil. In the paddy field soil, the content change trends of soil organic matters and total nitrogen are similar, and the soil organic matters and the total nitrogen are in a relationship of mutual promotion and mutual restriction, and have a better coupling relationship.
Gamma-polyglutamic acid (gamma-PGA) has super-strong hydrophilicity and water retention capacity. When the fertilizer is flooded in soil, a layer of film is formed on the surface layer of plant root hair, so that the fertilizer has the function of protecting the root hair, is an optimal conveying platform for closely contacting nutrients and water in the soil with the root hair, and can effectively improve the dissolution, storage, conveying and absorption of the fertilizer; prevents sulfate radicals, phosphate radicals and oxalate radicals from generating precipitation with metal elements, so that the crops can absorb phosphorus, calcium, magnesium and trace elements in soil more effectively; promote the growth of crop root system and strengthen disease resistance. At present, the synthesis methods of gamma-polyglutamic acid are more, and the method comprises the traditional peptide synthesis method, the dimer condensation method, the natto extraction method, the microbial fermentation method and the like. At present, the polyamino urea is applied to planting vegetables and fruits, and good economic and environmental benefits are obtained.
For crops such as rice, wheat, corn, sorghum and the like, the ammonium nitrate ratio supply of soil in a certain proportion can play a good role in promoting the absorption of nitrogen, and the application of a stable nitrogen fertilizer containing a nitrification inhibitor, a urease inhibitor and the like can slow down NH4 +-N to NO3 --N conversion process to maintain high NH content in the soil4 +-N content.
Because farmland soil nitrogen loss is serious, nitrogen fertilizer utilization rate is low, different crops have different requirements on nitrogen, phosphorus and potassium, and stable fertilizer development urgently needs a new direction, nitrogen fertilizer, medium trace elements, nitrogen regulation synergist and carbon synergist are matched to prepare the synergistic stable fertilizer, so that the synergistic stable fertilizer becomes a new direction, and has very important significance for improving soil fertility, storing soil nitrogen storage and increasing crop yield.
Disclosure of Invention
The invention aims to provide a synergistic stable nitrogenous fertilizer and a preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
a synergistic stable nitrogenous fertilizer contains urea, medium-trace elements (Ca, Mg, S, B, Si, Fe and Zn), nitrogen regulating synergist, and carbon source synergist (preferably amino acids). The proportion of the urea, the medium trace elements, the nitrogen regulating synergist and the carbon source (amino acid) is 1:0.3-0.5:0.8-1:0.05-0.1:0.001-0.1:0.1-0.3 in parts by weight.
Dissolving the inhibitor into an organic solvent according to the above measurement, mechanically and uniformly mixing by a stirring pump, dissolving the measured carbon source (gamma-polyglutamic acid) into an aqueous solution, mechanically and uniformly mixing by the stirring pump, adding the two solutions and the phosphorus-potassium fertilizer into urea-urea slurry, and granulating by a common urea production granulating device to obtain the synergistic stable nitrogenous fertilizer with the grain size of 0.85-2.8mm accounting for more than 93%.
Adding a certain amount of carbon source gamma-polyglutamic acid, meeting the requirement that the C/N of the soil is 25:1 after the carbon source gamma-polyglutamic acid is added into the soil, relieving the loss of nitrogen caused by untimely supply of the carbon source, simultaneously fixing the carbon and nitrogen in microorganisms, and slowly releasing the nitrogen by microbial decomposition and clay mineral fixation, thereby meeting the requirement of crops on compound fertilizers in each period of growth. Polyglutamic acid is a water-soluble, biodegradable, non-toxic biopolymer prepared using microbial fermentation. It is a viscous substance, which was first discovered in "natto", a fermented bean. It is a special anionic natural polymer. The compound is prepared by condensing D-type glutamic acid molecules and L-type glutamic acid molecules through amido bonds between alpha-amino groups and gamma-carboxylic acid groups, the molecular weight of the compound is 5000-10000 million daltons, and the structural formula is shown as formula 1:
formula 1 polyglutamic acid structure formula
Polyglutamic acid is a new generation plant nutrition promoter, is used as a high molecular compound, can play a role of an ion pump, can strengthen the absorption of nitrogen, phosphorus, potassium and trace elements, has biocompatibility and the complexing performance on positive and negative charges, can play a role of a pump, a vehicle and a concentrator, can effectively lock nutrients, improve the effective concentration of the nutrients, reduce the loss of chemical fertilizers, enrich the nutrients, improve the utilization rate of the fertilizers, promote the development of crop root systems and the synthesis of protein and the like, and further achieves the effects of increasing the yield and improving the quality. Meanwhile, the polyglutamic acid is a safe, environment-friendly and hormone-free product, can be degraded into monomer amino acid-glutamic acid, is absorbed and utilized by crops, and is safe, efficient and pollution-free.
The invention has the following advantages:
1. after the synergistic stable nitrogen fertilizer is applied, the compound fertilizer is kept in the soil in the form of ammonium nitrogen for a long time due to the addition of the nitrification inhibitor, thereby avoiding the occurrence of high-amount nitrate nitrogen, reducing the nitrogen loss caused by the leaching and denitrification of nitrogen, improving the utilization rate of the nitrogen fertilizer, promoting the existence of the nitrogen fertilizer in the form of ammonium nitrogen, reducing the time for supplying the nitrogen fertilizer to crops in the form of nitrate nitrogen and nitrite nitrogen, reducing the toxicity of the crops in the seedling stage and enhancing the capability of resisting plant diseases and insect pests.
2. After the synergistic stable nitrogen fertilizer is applied, the requirement of the growth of crops on a carbon source can be met, the type of the added carbon source is gamma-polyglutamic acid, and the gamma-polyglutamic acid has the function of activating phosphorus nutrition while supplementing the carbon source, so that the requirement of the crops on phosphorus is met.
3. After the synergistic stable nitrogen fertilizer is applied, part of fertilizer nitrogen can be stored in soil, and the synergistic stable nitrogen fertilizer simultaneously has a carbon source and a nitrogen source, so that the synergistic stable nitrogen fertilizer is fixed by microorganisms and clay minerals. The microorganism immobilization is mainly realized in the condition that a carbon source is sufficient, the microorganism can simultaneously absorb and utilize the carbon source and the nitrogen source to meet the growth and development of the microorganism, the microorganism is fixedly stored in soil in the form of partial organic nitrogen and is slowly released when crops need. The combination of the two enriches the soil nitrogen reservoir and increases the nitrogen retention. Improving the characteristics of nitrogen reservoirs in soil. On the other hand, the polyglutamic acid has a special molecular structure, so that the polyglutamic acid has strong moisture-retaining capacity, improves the granular structure of the soil, loosens the soil, improves the moisture-retaining and fertilizer-retaining capacity of the soil, has the effects of adjusting the pH value of the soil and reducing the content of heavy metals in the soil, and has a strong adjusting effect on the nutrient supply of the soil.
4. After the synergistic stable nitrogen fertilizer is applied, the nitrogen in soil can be fixed, the utilization rate of the nitrogen fertilizer is improved, the emission of greenhouse gases is reduced, the environmental pollution is reduced, the original phosphorus and potassium in the soil are activated, and particularly, the synergistic effect on potassium is obvious, so that the effects of increasing roots, strengthening seedlings, resisting diseases, resisting lodging, increasing yield and gaining harvest can be achieved.
5. After the synergistic stable nitrogen fertilizer is applied, the fertilizer contains components, has high stability, economy and special adsorption and retention characteristics on nutrients such as nitrogen and the like, and can obviously adsorb NH4 +And inorganic salt ions are added, so that the nitrogen loss in the soil can be reduced, the utilization efficiency of the organic fertilizer is effectively improved, and the fertility of the soil is gradually improved. Meanwhile, due to the porous structure and the large specific surface area, the fertilizer is applied to soil and has the advantages of volume weight, water content, porosity and electricityThe conductivity, the cation exchange capacity, the nutrient condition of the soil and the like can generate direct or indirect influences, so that the microenvironment of the soil is influenced.
6. After the synergistic stable compound fertilizer is applied, the nitrogen regulating synergist (urease inhibitor and nitrification inhibitor) and the gamma-polyglutamic acid are combined to prepare the compound fertilizer synergist, can fully exert the synergistic effect of urease inhibitor and nitrification inhibitor for inhibiting the hydrolysis and transformation of urea nitrogen and the synergistic effect of polyglutamic acid on the nutrient absorption of crops and the enhancement of water retention and fertilizer conservation, can effectively inhibit the hydrolysis of urea and the conversion of urea into nitrate nitrogen, effectively prolong the fertilizer efficiency of the urea nitrogen fertilizer, improve the absorption and utilization effects of crops on nitrogen, increase the absorption of plants on nitrogen, improve the utilization rate of fertilizer, increase the content of protein, amino acid, fat and other nutrient substances in agricultural products, simultaneously activates medium trace elements required by plants in soil, increases the effective enrichment amount of the trace elements required by crops in the soil, and promotes the crops to absorb other nutrient elements.
7. The fertilizer production is carried out by combining a protection chelation process and a multi-stage compression process. The preparation method comprises the steps of combining yeast autolysis and complex enzyme hydrolysis, carrying out biochemical reaction through a multi-stage compression process to prepare an amino acid solution, mixing a trace element solution with the prepared amino acid solution, and carrying out a chelation reaction through a protection chelation process to replace amino acid and trace element by groups on two-position C atoms to generate the amino acid chelated fertilizer. The technological process of producing the fertilizer includes enzyme mother mud → pressure filtration → autolysis → enzymatic hydrolysis → filtration → batching → chelation → cooling → filtration → combination → finished product packaging. The process has mild reaction conditions and is convenient to operate.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following examples.
Example 1:
the synergistic stable nitrogen fertilizer consists of urea, magnesium, urease inhibitor and polyglutamic acid.
Based on 100 parts by weight of urea slurry, 50 parts of calcium superphosphate, 100 parts of potassium sulfate, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol having a volume concentration of 37% and capable of dissolving ammonium thiosulfate, and 20 parts of gamma-polyglutamic acid are added.
The preparation method comprises the following steps:
based on 100 parts (kilogram) urea-slurry (molten urea), 5 parts of ammonium thiosulfate is dissolved in 300-500ml (400 ml volume concentration) of 37% methanol (used as a carrier of a slow-release agent) and is fully and uniformly mixed; dissolving 20 parts of gamma-polyglutamic acid in water and uniformly mixing; the two and 8 parts of magnesium are added into urea slurry, and a synergistic stable nitrogen fertilizer with the grain diameter of 0.85-2.8mm which is more than or equal to 90 percent and the nitrogen content of 24 percent is produced by granulation by utilizing a device and a process for producing common granular urea.
Example 2:
the components of the synergistic stable nitrogenous fertilizer comprise urea, sulfur, urease inhibitor, nitrification inhibitor and gamma-polyglutamic acid.
Based on 100 parts by weight (100 kg) of urea slurry, 300 ml (400 ml) of methanol having a volume concentration of 37% and capable of dissolving ammonium thiosulfate and 3, 4-dimethylpyrazole phosphate, 300 parts of sulfur, 2.5 parts of ammonium thiosulfate and 2.5 parts of 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added.
The preparation method comprises the following steps:
2.5 parts of ammonium thiosulfate and 2.5 parts of 3, 4-dimethylpyrazole phosphate are dissolved in 300-500ml (400 ml here) of 37% methanol (as a carrier for a sustained release agent) in volume concentration, based on 100 parts of urea-urea slurry (molten urea), and sufficiently mixed; dissolving 20 parts of gamma-polyglutamic acid in water and uniformly mixing; the flow is calculated by a metering pump, the two mixed solutions and 8 parts of sulfur are added into urea slurry, and a synergistic stable nitrogen fertilizer with the grain diameter of 0.85-2.8mm, which is more than or equal to 90 percent and the nitrogen content of 24 percent, is produced by utilizing a device and a process for producing common granular urea.
Example 3:
the components of the synergistic stable nitrogen fertilizer comprise urea, nitrification inhibitor, zinc and gamma-polyglutamic acid.
Based on 100 parts (100 kg) of urea slurry, 7 parts of zinc, 5 parts of 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving the 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added.
The preparation method comprises the following steps:
5 parts of 3, 4-dimethylpyrazole phosphate was dissolved in 500ml (400 ml here) of methanol (as a carrier for a sustained-release agent) having a volume concentration of 37% in 100 parts of urea-urea slurry (molten urea) and sufficiently mixed; dissolving 20 parts of polyglutamic acid in water and uniformly mixing; the flow rate is calculated by a metering pump, the two mixed solutions, 7 parts of zinc, 50 parts of calcium superphosphate and 100 parts of potassium chloride are added into urea slurry, and a synergistic stable nitrogen fertilizer with the grain diameter of 0.85-2.8mm which is more than or equal to 90 percent and the nitrogen content of 24 percent is produced by granulation by utilizing a device and a process for producing common granular urea.
Application example 1:
the synergistic stable nitrogen fertilizer produced according to the example 1 is applied to corn, rice and wheat in a field contrast test, the application time is one-time application of base fertilizer before sowing (corn and wheat) and transplanting (rice), the contrast is common urea treatment, the application amount of the nitrogen fertilizer in the contrast corn plots is reduced to 12 kg/mu of pure nitrogen, the application amount of the rice is reduced to 15 kg/mu of pure nitrogen, and the application amount of the wheat is reduced to 5 kg/mu of pure nitrogen. Application example nitrogen was applied at 80% of control. The fertilizer application time is 5 months and 1 day, the fertilizer application time for the wheat planting plots is 4 months and 15 days, the fertilizer application time for the rice planting plots is 5 months and 20 days, and the obtained field test results are as follows:
unit is mu
Application comparative example 1:
the application comparative example is a field application comparative test of a fertilizer without a carbon-containing synergist and the synergistic stability nitrogen fertilizer. The application time is one-time application of base fertilizer before sowing (corn and wheat) and transplanting (rice), the application amount of the corn plot nitrogen fertilizer is reduced to 12 kg/mu of pure nitrogen, the application amount of the rice is reduced to 15 kg/mu of pure nitrogen, the application amount of the wheat is reduced to 5 kg/mu of pure nitrogen, the application time of the corn planting plot fertilizer is 5 months and 1 day, the application time of the wheat planting plot fertilizer is 4 months and 15 days, and the application time of the rice planting plot is 5 months and 20 days.
The synergistic stable nitrogen fertilizer produced in example 1 was tested in a field comparison with products without carbon synergist (i.e. without polyglutamic acid) and planted as corn, rice and wheat. The ingredients of example 1 include urea, magnesium, ammonium thiosulfate, the urease inhibitor, gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of magnesium, 5 parts of ammonium thiosulfate, 37 vol.% methanol capable of dissolving ammonium thiosulfate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 1 includes urea, magnesium, and the urease inhibitor ammonium thiosulfate. The addition amount of the magnesium sulfate is 8 parts and 5 parts of ammonium thiosulfate based on 100 parts of urea slurry.
The synergistic stable nitrogen fertilizer produced as in example 2 was tested in a field contrast test with products without carbon synergist (i.e. without polyglutamic acid) and crops were corn, rice and wheat; the ingredients of example 2 include urea, sulfur, urease inhibitors, nitrification inhibitors, gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving the ammonium thiosulfate and the 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 2 includes urea, urease inhibitor, nitrification inhibitor. The addition amounts of 8 parts of sulfur, 5 parts of ammonium thiosulfate and 5 parts of 3, 4-dimethylpyrazole phosphate are calculated based on 100 parts of urea slurry.
A field control experiment was conducted on the synergistic stable nitrogen fertilizer produced in example 3, with a product without the addition of a carbon synergist (i.e., without the addition of polyglutamic acid), and the crops grown were corn, rice and wheat the ingredients of example 3 included urea, zinc, nitrification inhibitor, and gamma-polyglutamic acid. The amounts of zinc, 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving 3, 4-dimethylpyrazole phosphate, and gamma-polyglutamic acid were 7 parts, 5 parts, and 20 parts, based on 100 parts of urea slurry. The comparative example of example 3 includes urea, zinc, nitrification inhibitor. The amount of zinc added was 7 parts and 3, 4-dimethylpyrazole phosphate was 5 parts based on 100 parts of urea slurry.
Test results show that after the synergistic stable nitrogen fertilizer and a corresponding fertilizer product without the carbon synergist are applied to field crops of corn, rice and wheat, the crop yield is remarkably reduced, the mechanism is that the nitrogen is supported to be more firmly fixed in soil after a carbon source is added, the nitrogen is slowly released in the later growth period of the crops for the growth needs of the crops, and the requirements of the later growth period of nutrition and the later reproductive period on the nitrogen are supported.
Field contrast test of synergistic stability of nitrogen fertilizer and fertilizer product without carbon synergist
Application comparative example 2:
and (4) performing a field contrast test when the addition amount of the carbonaceous material is greater than the upper limit of the protection range. The application time is one-time application of base fertilizer before sowing (corn and wheat) and transplanting (rice), the application amount of the corn plot nitrogen fertilizer is reduced to 12 kg/mu of pure nitrogen, the application amount of the rice is reduced to 15 kg/mu of pure nitrogen, the application amount of the wheat is reduced to 5 kg/mu of pure nitrogen, the application time of the corn planting plot fertilizer is 5 months and 1 day, the application time of the wheat planting plot fertilizer is 4 months and 15 days, and the application time of the rice planting plot is 5 months and 20 days.
The synergistic stable nitrogen fertilizer produced according to the example 1 is added with the nitrogen fertilizer, the magnesium and nitrogen regulating synergist and the carbon synergist in a weight ratio of 1:0.5:1:0.08:0.05: the product of 1 is compared with the field application effect, and the components of the example 1 comprise urea, magnesium, urease inhibitor ammonium thiosulfate and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of magnesium, 5 parts of ammonium thiosulfate, 37 vol.% methanol capable of dissolving ammonium thiosulfate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 1 includes urea, magnesium, and the urease inhibitor ammonium thiosulfate. The addition amount of the additive is calculated by 100 parts of urea pulp, and 8 parts of magnesium, 5 parts of ammonium thiosulfate and 100 parts of gamma-polyglutamic acid are added.
The synergistic stable nitrogen fertilizer produced according to the example 2 is added with the nitrogen fertilizer, the sulfur and nitrogen synergist and the carbon synergist in a weight ratio of 1:0.5:1: 0:08: 0.05: 1, and comparing the field application effect, wherein 0.1 part of biochemical inhibitor comprises 0.05 part of urease inhibitor and 0.05 part of nitrification inhibitor. The ingredients of example 2 included urea, sulfur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3, 4-dimethylpyrazole phosphate, and the carbon source gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving the ammonium thiosulfate and the 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added. The comparative example ingredients of example 2 included urea, sulfur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3, 4-dimethylpyrazole phosphate, and gamma-polyglutamic acid. The addition amount is calculated by 100 parts of urea pulp, 50 parts of 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3, 4-dimethylpyrazole phosphate and 100 parts of gamma-polyglutamic acid are added.
The synergistic stable nitrogen fertilizer produced according to the example 3 is added with the nitrogen fertilizer, the zinc and nitrogen regulating synergist and the carbon synergist in a weight ratio of 1:0.5:1:0.07:0.05: the product of 1 is compared with the field application effect, and the components of the example 3 comprise urea, zinc, 3, 4-dimethylpyrazole phosphate serving as a nitrification inhibitor and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 7 parts of zinc, 5 parts of 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol having a solubility of 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 3 includes urea, zinc, nitrification inhibitor 3, 4-dimethylpyrazole phosphate, and gamma-polyglutamic acid. The addition amounts of the zinc, 3, 4-dimethylpyrazole phosphate and gamma-polyglutamic acid are 7 parts by weight, 5 parts by weight and 100 parts by weight based on 100 parts of urea slurry.
In this case, the amount of carbon source added exceeds the range of protection. The increase of carbon is found to increase the demand of microorganisms on nitrogen, so that the competition of microorganisms on nitrogen in soil is caused, the absorption and utilization of nitrogen by crops are influenced, and the yield of crops is reduced.
Field contrast test of fertilizer product with synergistic stability and addition of nitrogen fertilizer and carbon synergist exceeding upper protection limit
Application comparative example 3:
and (4) performing field comparison test when the addition amount of the carbon-containing synergist is lower than the protection range. The application time is one-time application of base fertilizer before sowing (corn and wheat) and transplanting (rice), the application amount of the corn plot nitrogen fertilizer is reduced to 12 kg/mu of pure nitrogen, the application amount of the rice is reduced to 15 kg/mu of pure nitrogen, and the application amount of the wheat is reduced to 5 kg/mu of pure nitrogen. The fertilizer application time for planting the corn plots is 5 months and 1 day, the fertilizer application time for planting the wheat plots is 4 months and 15 days, and the fertilizer application time for planting the rice plots is 5 months and 20 days.
The synergistic stable nitrogen fertilizer produced in example 1 was subjected to a field control test with a control product in which a nitrogen fertilizer, a magnesium and nitrogen adjusting synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.08:0.05:0.01, and crops of corn, rice and wheat were planted. The ingredients of example 1 include urea, calcium superphosphate, potassium sulfate, magnesium, urease inhibitor ammonium thiosulfate, and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of magnesium, 5 parts of ammonium thiosulfate, 37 vol.% methanol capable of dissolving ammonium thiosulfate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 1 included urea, magnesium, the urease inhibitor ammonium thiosulfate, gamma-polyglutamic acid. The addition amount of the additive is calculated by 100 parts of urea pulp, 8 parts of magnesium, 5 parts of ammonium thiosulfate and 1 part of gamma-polyglutamic acid are added.
The synergistic stable nitrogen fertilizer produced in example 2 was subjected to a field comparison test with a comparison product in which a nitrogen fertilizer, a sulfur and nitrogen regulating synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.08:0.05:0.01, and crops of corn, rice and wheat were planted. 0.05 part of biochemical inhibitor comprises 0.025 part of ammonium thiosulfate and 0.025 part of 3, 4-dimethylpyrazole phosphate. The ingredients of example 2 include urea, sulfur, ammonium thiosulfate, 3, 4-dimethylpyrazole phosphate, a nitrification inhibitor, and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving the ammonium thiosulfate and the 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 2 included urea, triple superphosphate, potassium chloride, sulfur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3, 4-dimethylpyrazole phosphate, gamma-polyglutamic acid. The addition amount is calculated by 100 parts of urea slurry, 50 parts of calcium superphosphate, 100 parts of potassium chloride, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3, 4-dimethylpyrazole phosphate and 1 part of gamma-polyglutamic acid are added.
The synergistic stable nitrogen fertilizer produced in example 3 was subjected to a field control test with a control product in which a nitrogen fertilizer, a zinc and nitrogen adjusting synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.07:0.05:0.01, and crops of corn, rice and wheat were planted. The components of example 3 include urea, zinc, nitrification inhibitor, gamma-polyglutamic acid. The amounts of zinc, 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving 3, 4-dimethylpyrazole phosphate, and gamma-polyglutamic acid were 7 parts, 5 parts, and 20 parts, based on 100 parts of urea slurry. The comparative example of example 3 includes urea, zinc, gamma-polyglutamic acid. The addition amounts of zinc, 3, 4-dimethylpyrazole phosphate and gamma-polyglutamic acid were 7 parts, 5 parts and 1 part, based on 100 parts of urea-urea slurry.
Test results show that after the carbon-nitrogen coupled compound fertilizer and a fertilizer product with the corresponding carbon source addition ratio lower than the lower limit of the protection range are applied to field crops of corn, rice and wheat, the crop yield is remarkably reduced, and the sufficient addition of the carbon source is a necessary condition for ensuring the crop yield.
Field contrast test of fertilizer products with synergistic stability when adding amount of compound fertilizer and carbon synergist is lower than lower limit of protection range
Application comparative example 4:
field control trials in the absence of added nitrogen-modulating synergist. The application time is one-time application of base fertilizer before sowing (corn and wheat) and transplanting (rice), the application amount of the corn plot nitrogen fertilizer is reduced to 12 kg/mu of pure nitrogen, the application amount of the rice is reduced to 15 kg/mu of pure nitrogen, and the application amount of the wheat is reduced to 5 kg/mu of pure nitrogen. The fertilizer application time for planting the corn plots is 5 months and 1 day, the fertilizer application time for planting the wheat plots is 4 months and 15 days, and the fertilizer application time for planting the rice plots is 5 months and 20 days.
The synergistic stable nitrogen fertilizer produced in example 1 was subjected to a field control test with a control product in which a nitrogen fertilizer, a magnesium and nitrogen adjusting synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.08:0:0.2, and crops of corn, rice and wheat were planted. The composition of example 1 includes urea, magnesium, and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of magnesium, 5 parts of ammonium thiosulfate, 37 vol.% methanol capable of dissolving ammonium thiosulfate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 1 includes urea, magnesium, gamma-polyglutamic acid. The addition amount of the magnesium is 8 parts and 20 parts of gamma-polyglutamic acid are calculated by 100 parts of urea slurry.
The synergistic stable nitrogen fertilizer produced in example 2 was subjected to a field comparison test with a comparative product in which a nitrogen fertilizer, a sulfur and nitrogen adjusting synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.08:0:0.2, and crops of corn, rice and wheat were planted. The ingredients of example 2 include urea, sulfur, ammonium thiosulfate, 3, 4-dimethylpyrazole phosphate, a nitrification inhibitor, and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving the ammonium thiosulfate and the 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 2 includes urea sulfur, gamma-polyglutamic acid. The addition amount of the additive is calculated by 100 parts of urea pulp, 8 parts of sulfur and 20 parts of gamma-polyglutamic acid are added.
The synergistic stable nitrogen fertilizer produced in example 3 was subjected to a field comparison test with a comparative product in which a nitrogen fertilizer zinc, a nitrogen adjusting synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.07:0:0.2, and crops of corn, rice and wheat were planted. The components of example 3 include urea, zinc, nitrification inhibitor, gamma-polyglutamic acid. The amounts of zinc, 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving 3, 4-dimethylpyrazole phosphate, and gamma-polyglutamic acid were 7 parts, 5 parts, and 20 parts, based on 100 parts of urea slurry. The comparative example of example 3 includes zinc urea, carbon synergist. The adding amount is calculated by 100 parts of urea pulp, 7 parts of zinc and 20 parts of gamma-polyglutamic acid are added.
The test result shows that the carbon-nitrogen coupling nitrogen fertilizer disclosed by the patent and a corresponding product without an inhibitor are subjected to a comparative test on field crops of corn, rice and wheat, and then the crop yield is reduced, so that the product has the advantage of effective matching of carbon and nitrogen, and nitrogen cannot be effectively regulated and controlled under the condition that the inhibitor is not added, and the carbon source loses the adding significance.
Field contrast test of synergistic stability nitrogen fertilizer and fertilizer product without inhibitor
Comparative application example 5
And (4) performing field contrast test when the addition amount of the nitrogen regulating synergist is larger than the upper limit of the protection range. The application time is one-time application of base fertilizer before sowing (corn and wheat) and transplanting (rice), the application amount of the corn plot nitrogen fertilizer is reduced to 12 kg/mu of pure nitrogen, the application amount of the rice is reduced to 15 kg/mu of pure nitrogen, and the application amount of the wheat is reduced to 5 kg/mu of pure nitrogen. The fertilizer application time for planting the corn plots is 5 months and 1 day, the fertilizer application time for planting the wheat plots is 4 months and 15 days, and the fertilizer application time for planting the rice plots is 5 months and 20 days.
The synergistic stable nitrogen fertilizer produced in example 1 was subjected to a field comparison test with a comparison product in which nitrogen fertilizer magnesium, nitrogen adjusting synergist and carbon synergist were added in a weight ratio of 1:0.5:1:0.08:0.2:0.2, and crops of corn, rice and wheat were planted. The ingredients of example 1 include urea, ammonium thiosulfate, a urease inhibitor, and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of magnesium, 5 parts of ammonium thiosulfate, 37 vol.% methanol capable of dissolving ammonium thiosulfate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 1 includes 8 parts of urea, magnesium, ammonium thiosulfate, gamma-polyglutamic acid. The addition amount of the additive is calculated by 100 parts of urea pulp, 8 parts of magnesium, 20 parts of ammonium thiosulfate and 20 parts of gamma-polyglutamic acid are added.
The synergistic stable nitrogen fertilizer produced in example 2 was subjected to a field comparison test with a comparison product in which a nitrogen fertilizer, a sulfur and nitrogen regulating synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.08:0.2:0.2, and crops of corn, rice and wheat were planted. 0.2 part of biochemical inhibitor comprises 0.1 part of urease inhibitor ammonium thiosulfate and 0.1 part of nitrification inhibitor 3, 4-dimethylpyrazole phosphate. The ingredients of example 2 include urea, sulfur, ammonium thiosulfate, 3, 4-dimethylpyrazole phosphate, a nitrification inhibitor, and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving the ammonium thiosulfate and the 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 2 contains urea, sulfur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3, 4-dimethylpyrazole phosphate, gamma-polyglutamic acid. The addition amount of the urea is calculated by 100 parts of urea pulp, and 8 parts of sulfur, 10 parts of urease inhibitor ammonium thiosulfate, 10 parts of nitrification inhibitor 3, 4-dimethylpyrazole phosphate and 20 parts of gamma-polyglutamic acid are added.
The synergistic stable nitrogen fertilizer produced in example 3 was subjected to a field control test with a control product in which a nitrogen fertilizer, a zinc and nitrogen adjusting synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.07:0.2:0.2, and crops of corn, rice and wheat were planted. The components of example 3 include urea, zinc, nitrification inhibitor, gamma-polyglutamic acid. The amounts of zinc, 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added in an amount of 7 parts per 100 parts of urea slurry. The comparative example of example 3 comprises urea, zinc, nitrification inhibitor and gamma-polyglutamic acid, and the addition amounts of zinc, nitrification inhibitor 3, 4-dimethylpyrazole phosphate and gamma-polyglutamic acid are 7 parts, 20 parts and 20 parts based on 100 parts of urea slurry.
Under the condition that the addition amount of the inhibitor exceeds the upper limit of the protection range, the crop yield is not obviously changed, the addition amount of the inhibitor in the protection range is the optimal addition amount, and if the addition amount exceeds the protection range, unnecessary production cost is increased.
Field contrast test of fertilizer products with synergistic stability of nitrogen fertilizer and inhibitor added in amounts exceeding upper limit of protection range
Comparative application example 6
And (4) performing field comparison test when the addition amount of the nitrogen regulation synergist is lower than the lower limit of the protection range. The application time is one-time application of base fertilizer before sowing (corn and wheat) and transplanting (rice), the application amount of the corn plot nitrogen fertilizer is reduced to 12 kg/mu of pure nitrogen, the application amount of the rice is reduced to 15 kg/mu of pure nitrogen, and the application amount of the wheat is reduced to 5 kg/mu of pure nitrogen. The fertilizer application time for planting the corn plots is 5 months and 1 day, the fertilizer application time for planting the wheat plots is 4 months and 15 days, and the fertilizer application time for planting the rice plots is 5 months and 20 days.
The synergistic stable nitrogen fertilizer produced in example 1 was subjected to a field control test with a control product in which a nitrogen fertilizer, a magnesium and nitrogen adjusting synergist and a carbon synergist were added in a weight ratio of 1:0.5:1:0.08:0.0005:0.2, and crops of corn, rice and wheat were planted. The ingredients of example 1 include urea, magnesium, ammonium thiosulfate, the urease inhibitor, gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of magnesium, 5 parts of ammonium thiosulfate, 37 vol.% methanol capable of dissolving ammonium thiosulfate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 1 included urea, magnesium, the urease inhibitor ammonium thiosulfate, gamma-polyglutamic acid. The addition amount of the additive is calculated by 100 parts of urea pulp, 8 parts of magnesium, 0.05 part of ammonium thiosulfate and 20 parts of gamma-polyglutamic acid are added. The synergistic stable nitrogen fertilizer produced in example 2 was subjected to a field control test with a control product in which nitrogen fertilizer, sulfur and nitrogen adjusting synergists and carbon synergists were added in a weight ratio of 1:0.5:1:0.08:0.0005:0.2, and crops of corn, rice and wheat were planted. 0.0005 parts of biochemical inhibitor comprises 0.00025 parts of urease inhibitor and 0.00025 parts of nitrification inhibitor. The ingredients of example 2 include urea, sulfur, ammonium thiosulfate, 3, 4-dimethylpyrazole phosphate, a nitrification inhibitor, and gamma-polyglutamic acid. Based on 100 parts (100 kg) of urea slurry, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving the ammonium thiosulfate and the 3, 4-dimethylpyrazole phosphate, and 20 parts of gamma-polyglutamic acid were added. The comparative example of example 2 contains urea, sulfur, the urease inhibitor ammonium thiosulfate, the nitrification inhibitor 3, 4-dimethylpyrazole phosphate, gamma-polyglutamic acid. The addition amount of the additive is calculated by 100 parts of urea pulp, 8 parts of sulfur, 0.025 part of ammonium thiosulfate of urease inhibitor, 0.025 part of 3, 4-dimethylpyrazole phosphate of nitrification inhibitor and 20 parts of gamma-polyglutamic acid are added.
The synergistic stable nitrogen fertilizer produced in example 3 was subjected to a field control test with a control product in which nitrogen fertilizer, zinc, nitrogen-adjusting synergist, and carbon synergist were added in a weight ratio of 1:0.5:1:0.07:0.0005:0.2, and crops of corn, rice, and wheat were planted. The components of example 3 include urea, zinc, nitrification inhibitor, gamma-polyglutamic acid. The amounts of zinc, 3, 4-dimethylpyrazole phosphate, 37 vol.% methanol capable of dissolving 3, 4-dimethylpyrazole phosphate, and gamma-polyglutamic acid were 7 parts, 5 parts, and 20 parts, based on 100 parts of urea slurry. The comparative example of example 3 comprises urea, zinc, nitrification inhibitor and gamma-polyglutamic acid, and the addition amounts of zinc, nitrification inhibitor 3, 4-dimethylpyrazole phosphate and gamma-polyglutamic acid are 7 parts, 0.05 part and 20 parts based on 100 parts of urea slurry.
Application comparative example 7
In the comparative example, materials outside the protection range are selected, and field test comparison tests verify that the application amount of corn is reduced to 12 kg/mu of pure nitrogen, the application amount of rice is reduced to 15 kg/mu of pure nitrogen, and the application amount of wheat is reduced to 5 kg/mu of pure nitrogen. The application time is that base fertilizer is applied once before sowing (corn and wheat) and transplanting (rice), the fertilizer application time is 5 months and 1 day, the fertilizer application time is 4 months and 15 days, and the fertilizer application time is 5 months and 20 days.
The nitrogen regulation synergist is selected from n-butyl thiophosphoryl triamide and 3, 5-dimethylpyrazole, the carbon synergist is selected from L-polyglutamic acid, the n-butyl thiophosphoryl triamide and the 3, 5-dimethylpyrazole are classical urease inhibitors and nitrification inhibitors, a large number of field experiments prove that the n-butyl thiophosphoryl triamide and the 3, 5-dimethylpyrazole have good urease inhibition and nitrification inhibition effects, and the nitrogen regulation synergist and the carbon synergist are combined for use in the comparative example. The L-polyglutamic acid is an isomer of the carbon-containing material gamma-polyglutamic acid, and is formed by condensing glutamic acid monomers in different combination forms. The field test result of the comparative example shows that when the carbon synergist is changed into the L-polyglutamic acid, the soil nitrogen retention amount is obviously reduced, and the soil nitrogen retention amount is expressed in the overground part, so that the crop yield is also obviously reduced. In this experiment, the product composition compared with that of example 1 was 100 parts of urea, 8 parts of magnesium, 5 parts of N-N-butyl thiophosphoric triamide and 20 parts of L-polyglutamic acid; the product composition compared with that of example 2 was 100 parts of urea, 8 parts of sulfur, 2.5 parts of N-N-butylthiophosphoric triamide, 2.5 parts of 3, 5-dimethylpyrazole and 20 parts of L-polyglutamic acid; the product composition compared with that of example 3 was 100 parts of urea, 7 parts of zinc, 5 parts of 3, 5-dimethylpyrazole and 20 parts of L-polyglutamic acid. The results of comparative experiment 7 show that the intended function cannot be performed when substances other than the carbonaceous material described in the present application are used, and that the key point of the product described in the present application is the interaction of the nitrogen source, the nitrogen-regulating synergist and the carbonaceous synergist in the soil.
Comparative field trials using non-protected ranges of nitrogen-modulating synergists and carbon synergists
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A synergistic stable nitrogenous fertilizer is characterized in that: the fertilizer components comprise nitrogen fertilizer, medium trace elements, nitrogen regulating synergist and carbon synergist; the proportion of the nitrogen fertilizer, the medium trace elements, the nitrogen regulating synergist and the carbon synergist is 1:0.05-0.1:0.001-0.1:0.1-0.3 (preferably 1: 0.08-0.1: 0.02-0.1: 0.15-0.25, more preferably 1: 0.1: 0.05: 0.2).
2. The synergistic stable compound fertilizer as claimed in claim 1, wherein: the nitrogen regulation synergist comprises a urease inhibitor and a nitrification inhibitor, or the nitrogen regulation synergist is the urease inhibitor, or the nitrogen regulation synergist is the nitrification inhibitor; the urease inhibitor comprises: one or more of N-butyl thiophosphoryl triamide, hydroquinone, phosphoric triamide, ammonium thiosulfate, P-benzoquinone, cyclohexyl thiophosphoric triamide, cyclohexyl phosphoric triamide, hexaamido cyclotriphosphazene, N-halo-2-oxazole idecene, N-N-dihalo-2-oxazole idecene, etc.;
nitrification inhibitors include: one or more of cetylpyridinium, dicyandiamide, 1-methylpyrazole-1-hydroxyamide, 3-methylpyrazole, ethyleneurea, chlorazol, 4-aminotriazole, thiourea, acetylene, 2-ethynylpyridine, sulfathiazole, guanylthiourea, 1-amidino-2-thiourea, 3, 4-dimethylpyrazole phosphate, sodium thiosulfate, potassium azide, sodium azide, calcium carbide, 2, 5-chloroaniline, 3-acetanilide, toluene, carbon disulfide, phenylacetylene, 2-propyn-1-ol, ammoxidation lignin, phenethylphosphorodiamidate, and the like.
3. The synergistic stable nitrogen fertilizer of claim 1, wherein:
the carbon source is one or more than two of polyglutamic acid, humic acid and fulvic acid; preferably gamma-polyglutamic acid;
the gamma-polyglutamic acid is formed by condensing D-type glutamic acid molecules and L-type glutamic acid molecules through amido bonds between alpha-amino groups and gamma-carboxylic acid groups, the molecular weight of the gamma-polyglutamic acid is between 5000-10000 million daltons, and the structural formula is shown as a formula 1:
4. a synergistic stable nitrogen fertilizer according to claim 1, characterized in that: the nitrogen fertilizer is urea. The medium trace elements include calcium, magnesium, sulfur, boron, silicon, iron and zinc.
5. The fertilizer production is carried out by combining a protection chelation process and a multi-stage compression process. The preparation method comprises the steps of combining yeast autolysis and complex enzyme hydrolysis, carrying out biochemical reaction through a multi-stage compression process to prepare an amino acid solution, mixing a trace element solution with the prepared amino acid solution, carrying out a chelation reaction through a protection chelation process to enable the amino acid and the trace element to be substituted by groups on two-position C atoms, and chelating to prepare the chelate of the amino acid and the trace element. The process flow for producing the substance is enzyme mother mud → pressure filtration → autolysis → enzymatic hydrolysis → filtration → batching → chelation → cooling → filtration → combination → finished product packaging. The process has mild reaction condition and convenient operation.
6. A method of preparing a synergistic stable nitrogen fertilizer as claimed in any one of claims 1 to 4, characterized in that: dissolving the inhibitor into an organic solvent according to the above amount, mechanically and uniformly mixing by using a stirring pump, and dissolving the carbon-containing material gamma-polyglutamic acid into water for uniformly mixing; the mixed solution of the two substances is granulated by a common urea production granulating device to obtain the synergistic stable nitrogen fertilizer with the grain diameter of 0.85-2.8mm accounting for more than 93 percent.
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| CN106966816A (en) * | 2017-05-17 | 2017-07-21 | 贵州天宝丰原生态农业科技有限公司 | Compound fertilizer specially used for potato, preparation method and application process |
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- 2020-12-03 DE DE212020000753.5U patent/DE212020000753U1/en not_active Expired - Lifetime
- 2020-12-07 CN CN202011437035.3A patent/CN112321361A/en active Pending
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| CN113443937A (en) * | 2021-07-16 | 2021-09-28 | 青岛农业大学 | Stable water-soluble fertilizer for adjusting pH of pear orchard soil and application thereof |
| CN114451165A (en) * | 2022-02-24 | 2022-05-10 | 河南农业大学 | Nitrogen synergist for regulating tobacco growth and method of use and application thereof |
| CN114451165B (en) * | 2022-02-24 | 2022-12-13 | 河南农业大学 | Nitrogen synergist for regulating and controlling tobacco growth and use method and application thereof |
| WO2024076491A1 (en) * | 2022-10-03 | 2024-04-11 | Verdesian Life Sciences U.S., Llc | Compositions for enhancing nitrogen fertilizers by incorporating anti-oxidant moieties and methods for use thereof |
| CN116023183A (en) * | 2022-12-30 | 2023-04-28 | 中振智农科技有限公司 | Composite synergist for improving utilization rate of rice fertilizer and preparation method thereof |
| CN116784042A (en) * | 2023-06-02 | 2023-09-22 | 湖北大学 | Cultivation method for reducing greenhouse gas emission of rice field by using biochar and polyglutamic acid |
| CN116768666A (en) * | 2023-06-25 | 2023-09-19 | 湖北世纪云天化学工程股份有限公司 | Fertilizer synergist, preparation method and application |
| CN116947564A (en) * | 2023-06-29 | 2023-10-27 | 河北省农林科学院农业资源环境研究所 | Preparation method and application of emission-reducing synergistic liquid nitrogen fertilizer |
| CN116986957A (en) * | 2023-08-16 | 2023-11-03 | 中国农业大学 | Double-effect stable fertilizer and preparation method thereof |
| CN117185876A (en) * | 2023-09-05 | 2023-12-08 | 新洋丰农业科技股份有限公司 | Stable water-soluble nitrogen fertilizer for improving cold resistance of tomatoes and preparation method thereof |
| CN117534528A (en) * | 2023-11-21 | 2024-02-09 | 宁夏大彩生物科技有限公司 | Environment-friendly compound fertilizer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022088377A1 (en) | 2022-05-05 |
| LU500810B1 (en) | 2022-05-02 |
| AU2021105230A4 (en) | 2021-10-07 |
| ZA202201019B (en) | 2022-08-31 |
| DE212020000753U1 (en) | 2022-07-19 |
| BE1028364B1 (en) | 2022-01-04 |
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