CN110950699A - Preparation method of organic compound fertilizer - Google Patents
Preparation method of organic compound fertilizer Download PDFInfo
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- CN110950699A CN110950699A CN201911409690.5A CN201911409690A CN110950699A CN 110950699 A CN110950699 A CN 110950699A CN 201911409690 A CN201911409690 A CN 201911409690A CN 110950699 A CN110950699 A CN 110950699A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C5/00—Fertilisers containing other nitrates
- C05C5/02—Fertilisers containing other nitrates containing sodium or potassium nitrate
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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
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Abstract
The invention discloses a preparation method of an organic compound fertilizer, belonging to the technical field of fertilizer preparation. The invention takes the mixed suspension mud liquid of rice bran and secondary sedimentation activated sludge as raw materials, the organic fertilizer containing humic acid is extracted by cracking and repeated dissolution, the waste is changed into valuable, the sodium humate in the organic fertilizer and the mixed carboxylic acid monomer in the liquid dispersant carry out graft copolymerization, the double-bond part of the mixed carboxylic acid monomer can be polymerized with the semiquinone group in the humic acid structure to generate ether bond under the action of the initiator, the polycarboxylic acid dispersant is formed, the dispersion is favorable, no precipitate is generated, glycine is added as a nitrogen element carrier, the nitrogen requirement of crops can be provided, simultaneously, carboxyl in amino acid has chelating capacity, the oxidation of ferrous can be prevented, the growth has regulation effect, acrylic acid and maleic anhydride in the liquid dispersant can generate acrylic ester by side reaction, the liquid fertilizer is semi-oily, is easier to adhere to the leaf surfaces of crops, and effectively inhibits transpiration, the fertilizer absorption efficiency is improved.
Description
Technical Field
The invention discloses a preparation method of an organic compound fertilizer, belonging to the technical field of fertilizer preparation.
Background
The organic compound fertilizer is a novel fertilizer which contains nitrogen, phosphorus, potassium and other macroelements, various trace elements, humic acid, amino acid, plant growth regulator and other effective components in the same fertilizer. Because the fertilizer has high content of various effective nutrient components, low content of additional components, comprehensive nutrition, less fertilization times, quick response, no moisture absorption and caking, and convenient storage, transportation and application, the development and the development of the fertilizer become a new way for improving the utilization rate of the fertilizer, and the development, the production, the popularization and the application of the organic compound fertilizer are very important for all countries in the world.
China is a big agricultural country, and the consumption of chemical fertilizers is the first place in the world. In the consumption of a large amount of chemical fertilizers, the proportion occupied by the consumption of the organic fertilizers is very small, and a quite large gap exists between the consumption of the organic fertilizers and the consumption of developed countries in the world, wherein the organic compound fertilizers are still in the starting stage at home, and because the solid particles prepared from the organic compound fertilizers are not easy to absorb, the prepared suspended fertilizers are easy to precipitate after being placed for a long time, have poor stability and suspension property, have poor adhesion to leaf surfaces, are easy to be washed away by rainwater, and have poor suspension effect when meeting the fertilizers with high salt content, so that the high-concentration suspended organic fertilizers are difficult to produce.
Therefore, the invention of the organic compound fertilizer with high adhesion, suspension dispersion and easy absorption has positive significance in the technical field of fertilizer preparation.
Disclosure of Invention
The invention aims to provide a preparation method of an organic compound fertilizer, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of an organic compound fertilizer is characterized by comprising the following specific preparation steps:
(1) mixing rice bran, secondary sedimentation activated sludge and water, adding 15% sodium hydroxide solution to adjust the pH value to 9-10, then putting the mixture into a high-pressure steam reaction kettle to crack for 1-2 hours, and naturally cooling the mixture to room temperature to obtain a composite cracking solution;
(2) placing the composite lysate in a high-speed refrigerated centrifuge, centrifuging for 5-8 min at the rotating speed of 2000-3000 r/min at the temperature of-20 to-15 ℃, removing the lower-layer precipitate to obtain an upper-layer solution, adjusting the pH of the upper-layer solution to 4-5 by using a sulfuric acid solution with the mass fraction of 40%, standing for precipitation for 10-15 h, and collecting the upper-layer clear solution to obtain the lysate;
(3) adjusting the pH value of the lysate to 2-3 by using hydrochloric acid with the mass fraction of 10%, placing the lysate in a high-speed freezing centrifuge, centrifuging for 10-12 min at the rotating speed of 3000-3500 r/min, collecting lower-layer solid, washing the solid for 3-5 times by using water, placing the solid in a freeze dryer, freeze-drying for 10-12 h, grinding the freeze-dried solid for 3-4 h, and sieving by using a 100-mesh sieve to obtain an organic fertilizer;
(4) mixing perlite powder, coconut coir and water, placing the mixture in a homogenizer for pulping for 1-2 hours to obtain slurry, filling 1.0-1.5L of the slurry into a fermentation tank, adding 40-50 g of urea, 30-40 g of glucose, 70-80 g of organic fertilizer and 20-30 g of potassium nitrate into the fermentation tank, sealing the fermentation tank, placing the fermentation tank in a greenhouse at the temperature of 40-45 ℃, fermenting for 10-15 days while keeping the temperature, taking out the fermented product, placing the fermented product in a water bath, heating to 90-100 ℃, and carrying out evaporative concentration for 3-4 hours to obtain concentrated organic fertilizer;
(5) adding 80-100 parts by weight of distilled water into a stirring kettle, heating to 45-50 ℃, dripping 70-80 parts of the compound monomer into a three-neck flask by using a dropping funnel, adjusting the pH to 7-8 by using a sodium hydroxide solution with the mass fraction of 20% after dripping is finished, then adding 2-3 parts of sodium bisulfate and 0.8-1.0 part of potassium thiosulfate, and carrying out heat preservation reaction for 4-5 hours to obtain a liquid dispersant;
(6) and mixing the liquid dispersing agent, the concentrated organic fertilizer, glycine, ferrous chloride, hydroxylamine hydrochloride and copper sulfate, adding into a reaction kettle, heating to 40-45 ℃, stirring and dispersing at the rotating speed of 200-250 r/min, and reacting for 1-2 hours to obtain the organic compound fertilizer.
The mixing mass ratio of the rice bran, the secondary sedimentation activated sludge and the water in the step (1) is 1: 5: 10.
And (3) controlling the temperature of the high-pressure steam reaction kettle to be 110-140 ℃ and the pressure to be 3-6 MPa during cracking in the high-pressure steam reaction kettle in the step (2).
The freeze drying temperature in the step (3) is controlled to be-30 to-20 ℃.
And (4) mixing the perlite powder, the coconut coir and the water according to the mass ratio of 2: 1: 3.
The liquid dispersant in the step (5) comprises, by weight, 80-100 parts of distilled water, 70-80 parts of a composite monomer, 2-3 parts of sodium bisulfate and 0.8-1.0 part of potassium thiosulfate.
The composite monomer in the step (5) is obtained by mixing acrylic acid and maleic anhydride according to the mass ratio of 4: 1.
The raw materials of the components for preparing the organic compound fertilizer in the step (6) comprise, by weight, 60-70 parts of a liquid dispersant, 18-20 parts of a concentrated organic fertilizer, 5-8 parts of glycine, 10-15 parts of ferrous chloride, 4-5 parts of hydroxylamine hydrochloride and 20-25 parts of copper sulfate.
The invention has the beneficial effects that:
(1) the invention takes the mixed suspension mud solution of rice bran and secondary sedimentation activated sludge as raw materials, extracts the organic fertilizer containing humic acid by cracking and repeated elution, changes waste into valuable, can effectively provide a plurality of nutrient elements such as nitrogen, phosphorus, potassium, iron, copper and the like required by crops, leads all the nutrient elements to be mutually cooperated and comprehensively utilized in a balanced way, leads the sodium humate in the organic fertilizer and the mixed carboxylic acid monomer in the liquid dispersant to carry out graft copolymerization reaction, leads the mixed carboxylic acid monomer to be under the action of an initiator, the double bond part of the polycarboxylic acid is polymerized with the semiquinone group in the humic acid structure to generate ether bond to form polycarboxylic acid dispersant, the polycarboxylic acid group has extremely strong hydrophilicity and larger spatial structure, larger steric hindrance can be generated, the improvement of the dispersing performance of the liquid fertilizer is facilitated, the fluidity of the organic fertilizer is improved, and the organic solid particles are dispersed without generating precipitation;
(2) the humic acid substance in the organic compound fertilizer is a surface active substance and a chelating substance, can coat the humic acid solid granular material, one non-polar end of the humic acid solid granular material is combined with the hydrophobic surface of the humic acid solid granular material, the polar carboxylic acid group faces outwards, the affinity of the humic acid solid granular material and water is enhanced, the high-viscosity aggregation is avoided, the sedimentation is avoided, and hard sedimentation is generated, in addition, glycine is added as a nitrogen element carrier, the nitrogen requirement of crops can be provided, simultaneously, the carboxyl group in the amino acid has chelating capacity, the chelating reaction can be generated with metal ions, the amino acid and ferrous ions are chelated to generate ferrous amino acid, the ferrous iron oxidation can be prevented, the crops can be effectively supplemented in time when the iron deficiency occurs, meanwhile, the amino acid is used as a basic unit formed by protein, the regulating effect can be realized on the growth of the crops, acrylic acid and maleic anhydride in the liquid dispersant can generate acrylic ester through, the liquid fertilizer is semi-oily, so that the liquid fertilizer is more easily adhered to the leaf surfaces of crops, transpiration is effectively inhibited, the absorption efficiency of the crops on nutrient elements is improved, and the application prospect is wide.
Detailed Description
Mixing rice bran, secondary sedimentation activated sludge and water according to a mass ratio of 1: 5: 10, adding 15% of sodium hydroxide solution to adjust the pH value to 9-10, then placing the mixture into a high-pressure steam reaction kettle to crack for 1-2 hours, controlling the temperature of the high-pressure steam reaction kettle to be 110-140 ℃ and the pressure to be 3-6 MPa, and naturally cooling the mixture to room temperature to obtain a composite cracking solution; placing the composite lysate in a high-speed refrigerated centrifuge, centrifuging for 5-8 min at the rotating speed of 2000-3000 r/min at the temperature of-20 to-15 ℃, removing the lower-layer precipitate to obtain an upper-layer solution, adjusting the pH of the upper-layer solution to 4-5 by using a sulfuric acid solution with the mass fraction of 40%, standing for precipitation for 10-15 h, and collecting the upper-layer clear solution to obtain the lysate; adjusting the pH value of the lysate to 2-3 by using hydrochloric acid with the mass fraction of 10%, placing the lysate in a high-speed freezing centrifuge, centrifuging for 10-12 min at the rotating speed of 3000-3500 r/min, collecting lower-layer solid, washing the solid for 3-5 times by using water, placing the solid in a freeze dryer, freeze-drying for 10-12 h at the temperature of-30 to-20 ℃, grinding the freeze-dried solid for 3-4 h, and sieving by using a 100-mesh sieve to obtain an organic fertilizer; mixing perlite powder, coconut coir and water according to a mass ratio of 2: 1: 3, pulping in a refiner for 1-2 hours to obtain slurry, filling 1.0-1.5L of the slurry into a fermentation tank, adding 40-50 g of urea, 30-40 g of glucose, 70-80 g of organic fertilizer and 20-30 g of potassium nitrate into the fermentation tank, sealing the fermentation tank, placing in a greenhouse at the temperature of 40-45 ℃, fermenting for 10-15 days in a heat preservation manner, taking out the fermented product, placing in a water bath, heating to 90-100 ℃, and concentrating by evaporation for 3-4 hours to obtain a concentrated organic fertilizer; adding 80-100 parts by weight of distilled water into a stirring kettle, heating to 45-50 ℃, mixing acrylic acid and maleic anhydride according to a mass ratio of 4: 1 to obtain a composite monomer, dripping 70-80 parts of the composite monomer into a three-neck flask by using a dropping funnel, adjusting the pH to 7-8 by using a sodium hydroxide solution with the mass fraction of 20% after dripping is finished, then adding 2-3 parts of sodium bisulfate and 0.8-1.0 part of potassium thiosulfate, and carrying out heat preservation reaction for 4-5 hours to obtain a liquid dispersant; according to the weight parts, 60-70 parts of liquid dispersing agent, 18-20 parts of concentrated organic fertilizer, 5-8 parts of glycine, 10-15 parts of ferrous chloride, 4-5 parts of hydroxylamine hydrochloride and 20-25 parts of copper sulfate are mixed and added into a reaction kettle, the temperature is raised to 40-45 ℃, the mixture is stirred and dispersed at the rotating speed of 200-250 r/min, and the organic compound fertilizer is obtained after reaction for 1-2 hours.
Example 1
Mixing rice bran, secondary sedimentation activated sludge and water according to a mass ratio of 1: 5: 10, adding 15% of sodium hydroxide solution to adjust the pH value to 9, then placing the mixture in a high-pressure steam reaction kettle for cracking h, controlling the temperature of the high-pressure steam reaction kettle to be 110 ℃ and the pressure to be 3MPa, and naturally cooling the mixture to room temperature to obtain a composite cracking solution; placing the composite lysate in a high-speed refrigerated centrifuge, centrifuging at the rotating speed of 2000r/min at the temperature of minus 20 ℃ for 5min, removing lower-layer precipitates to obtain upper-layer solution, adjusting the pH of the upper-layer solution to 4 by using a sulfuric acid solution with the mass fraction of 40%, standing for precipitation for 10h, and collecting the upper-layer clear solution to obtain the lysate; adjusting the pH value of the lysate to 2 by using hydrochloric acid with the mass fraction of 10%, placing the lysate into a high-speed refrigerated centrifuge, centrifuging for 10min at the rotating speed of 3000r/min, collecting lower-layer solid, washing the solid for 3 times by using water, placing the solid into a freeze dryer, freeze-drying for 10h at the temperature of minus 30 ℃, grinding the freeze-dried solid for 3h, and sieving by using a 100-mesh sieve to obtain the organic fertilizer; mixing perlite powder, coconut coir and water according to a mass ratio of 2: 1: 3, pulping in a refiner for 1h to obtain slurry, filling 1.0L of the slurry into a fermentation tank, adding 40g of urea, 30g of glucose, 70g of organic fertilizer and 20g of potassium nitrate into the fermentation tank, sealing the fermentation tank, placing in a greenhouse at the temperature of 40 ℃, fermenting for 10 days under heat preservation, taking out the fermented product, placing in a water bath, heating to 90 ℃, and concentrating by evaporation for 3h to obtain concentrated organic fertilizer; adding 80 parts by weight of distilled water into a stirring kettle, heating to 45 ℃, mixing acrylic acid and maleic anhydride according to a mass ratio of 4: 1 to obtain a composite monomer, dripping 70 parts of the composite monomer into a three-neck flask by using a dropping funnel, adjusting the pH to 7 by using a sodium hydroxide solution with the mass fraction of 20% after dripping is finished, then adding 2 parts of sodium bisulfate and 0.8 part of potassium thiosulfate, and carrying out heat preservation reaction for 4 hours to obtain a liquid dispersant; according to the weight parts, 60 parts of liquid dispersant, 18 parts of concentrated organic fertilizer, 5 parts of glycine, 10 parts of ferrous chloride, 4 parts of hydroxylamine hydrochloride and 20 parts of copper sulfate are mixed and added into a reaction kettle, the temperature is raised to 40 ℃, the mixture is stirred and dispersed at the rotating speed of 200r/min, and the organic compound fertilizer is obtained after the reaction for 1 hour.
Example 2
Mixing rice bran, secondary sedimentation activated sludge and water according to a mass ratio of 1: 5: 10, adding 15% of sodium hydroxide solution to adjust the pH value to 10, then placing the mixture in a high-pressure steam reaction kettle to crack for 2 hours, controlling the temperature of the high-pressure steam reaction kettle to be 130 ℃ and the pressure to be 4MPa, and naturally cooling the mixture to room temperature to obtain a composite cracking solution; placing the composite lysate in a high-speed refrigerated centrifuge, centrifuging at 2500r/min at-18 ℃ for 7min, removing lower-layer precipitates to obtain upper-layer solution, adjusting the pH of the upper-layer solution to 5 by using a sulfuric acid solution with the mass fraction of 40%, standing for precipitation for 13h, and collecting the upper-layer clear solution to obtain the lysate; adjusting the pH value of the lysate to 3 by using 10% hydrochloric acid by mass fraction, placing the lysate in a high-speed refrigerated centrifuge, centrifuging for 11min at the rotating speed of 3300r/min, collecting lower-layer solid, washing the solid for 4 times by using water, placing the solid in a freeze dryer, freeze-drying for 11h at the temperature of minus 25 ℃, grinding the freeze-dried solid for 4h, and sieving by using a 100-mesh sieve to obtain the organic fertilizer; mixing perlite powder, coconut coir and water according to a mass ratio of 2: 1: 3, pulping in a refiner for 1h to obtain slurry, filling 1.0L of the slurry into a fermentation tank, adding 45g of urea, 35g of glucose, 75g of organic fertilizer and 25g of potassium nitrate into the fermentation tank, sealing the fermentation tank, placing in a greenhouse at the temperature of 43 ℃, fermenting for 13 days under heat preservation, taking out the fermented product, placing in a water bath, heating to 95 ℃, and concentrating by evaporation for 4h to obtain concentrated organic fertilizer; adding 90 parts by weight of distilled water into a stirring kettle, heating to 47 ℃, mixing acrylic acid and maleic anhydride according to a mass ratio of 4: 1 to obtain a composite monomer, dripping 75 parts of the composite monomer into a three-neck flask by using a dropping funnel, adjusting the pH to 8 by using a sodium hydroxide solution with the mass fraction of 20% after dripping is finished, then adding 3 parts of sodium bisulfate and 0.9 part of potassium thiosulfate, and carrying out heat preservation reaction for 5 hours to obtain a liquid dispersant; according to the weight parts, 65 parts of liquid dispersant, 19 parts of concentrated organic fertilizer, 6 parts of glycine, 13 parts of ferrous chloride, 5 parts of hydroxylamine hydrochloride and 23 parts of copper sulfate are mixed and added into a reaction kettle, the temperature is raised to 42 ℃, the mixture is stirred and dispersed at the rotating speed of 220r/min, and the organic compound fertilizer is obtained after the reaction for 2 hours.
Example 3
Mixing rice bran, secondary sedimentation activated sludge and water according to a mass ratio of 1: 5: 10, adding 15% of sodium hydroxide solution to adjust the pH value to 10, then placing the mixture in a high-pressure steam reaction kettle to crack for 2 hours, controlling the temperature of the high-pressure steam reaction kettle to be 140 ℃ and the pressure to be 6MPa, and naturally cooling the mixture to room temperature to obtain a composite cracking solution; placing the composite lysate in a high-speed refrigerated centrifuge, centrifuging at the rotating speed of 3000r/min at the temperature of-15 ℃ for 8min, removing lower-layer precipitates to obtain upper-layer solution, adjusting the pH of the upper-layer solution to 5 by using a sulfuric acid solution with the mass fraction of 40%, standing for precipitation for 15h, and collecting the upper-layer clear solution to obtain the lysate; adjusting the pH value of the lysate to 3 by using hydrochloric acid with the mass fraction of 10%, placing the lysate in a high-speed refrigerated centrifuge, centrifuging at the rotating speed of 3500r/min for 12min, collecting lower-layer solid, washing the solid for 5 times by using water, placing the solid in a freeze dryer, freeze-drying the solid at the temperature of minus 20 ℃ for 12h, grinding the freeze-dried solid for 4h, and sieving the solid by using a 100-mesh sieve to obtain the organic fertilizer; mixing perlite powder, coconut coir and water according to a mass ratio of 2: 1: 3, pulping in a refiner for 2h to obtain slurry, filling 1.5L of the slurry into a fermentation tank, adding 50g of urea, 40g of glucose, 80g of organic fertilizer and 30g of potassium nitrate into the fermentation tank, sealing the fermentation tank, placing in a greenhouse at the temperature of 45 ℃, fermenting for 15 days under heat preservation, taking out the fermented product, placing in a water bath, heating to 100 ℃, and concentrating by evaporation for 4h to obtain concentrated organic fertilizer; adding 100 parts by weight of distilled water into a stirring kettle, heating to 50 ℃, mixing acrylic acid and maleic anhydride according to a mass ratio of 4: 1 to obtain a composite monomer, dripping 80 parts of the composite monomer into a three-neck flask by using a dropping funnel, adjusting the pH to 8 by using a sodium hydroxide solution with the mass fraction of 20% after dripping is finished, then adding 3 parts of sodium bisulfate and 1.0 part of potassium thiosulfate, and carrying out heat preservation reaction for 5 hours to obtain a liquid dispersant; according to the weight parts, 70 parts of liquid dispersant, 20 parts of concentrated organic fertilizer, 8 parts of glycine, 15 parts of ferrous chloride, 5 parts of hydroxylamine hydrochloride and 25 parts of copper sulfate are mixed and added into a reaction kettle, the temperature is raised to 45 ℃, the mixture is stirred and dispersed at the rotating speed of 250r/min, and the organic compound fertilizer is obtained after reaction for 2 hours.
Comparative example
Organic compound fertilizer produced by Suzhou company is used as a comparative example
The organic compound fertilizer prepared by the invention and the organic compound fertilizer in the comparative example are subjected to performance detection, and the detection results are shown in table 1:
the test method comprises the following steps:
and (3) testing the content of nitrogen, phosphorus and potassium: taking one liter of the liquid fertilizers in examples 1-3 and the comparative example respectively, and measuring the contents of nitrogen, phosphorus and potassium in each liter of the liquid fertilizer;
and (3) yield testing: the test is carried out in the Taihe town of the white cloud area in Guangzhou city, the liquid fertilizers in examples 1-3 and comparative examples are irrigated at the root, 5000ml of the liquid fertilizer is sequentially injected into 500kg of water every mu to prepare 1: 100 times of liquid, the liquid is irrigated after uniform mixing, and the ear per mu, the grain per mu and the thousand grain weight are measured after a certain time, and the yield is measured.
TABLE 1 results of liquid fertilizer Performance measurements
According to the data, the organic compound fertilizer prepared by the invention has high nitrogen, phosphorus and potassium contents, high absorption efficiency of crops on nutrient elements and good yield, and shows that the liquid fertilizer has good adhesion to the leaf surfaces of the crops, good stability, is beneficial to absorption and has wide application prospect.
Claims (8)
1. A preparation method of an organic compound fertilizer is characterized by comprising the following specific preparation steps:
(1) mixing rice bran, secondary sedimentation activated sludge and water, adding 15% sodium hydroxide solution to adjust the pH value to 9-10, then putting the mixture into a high-pressure steam reaction kettle to crack for 1-2 hours, and naturally cooling the mixture to room temperature to obtain a composite cracking solution;
(2) placing the composite lysate in a high-speed refrigerated centrifuge, centrifuging for 5-8 min at the rotating speed of 2000-3000 r/min at the temperature of-20 to-15 ℃, removing the lower-layer precipitate to obtain an upper-layer solution, adjusting the pH of the upper-layer solution to 4-5 by using a sulfuric acid solution with the mass fraction of 40%, standing for precipitation for 10-15 h, and collecting the upper-layer clear solution to obtain the lysate;
(3) adjusting the pH value of the lysate to 2-3 by using hydrochloric acid with the mass fraction of 10%, placing the lysate in a high-speed freezing centrifuge, centrifuging for 10-12 min at the rotating speed of 3000-3500 r/min, collecting lower-layer solid, washing the solid for 3-5 times by using water, placing the solid in a freeze dryer, freeze-drying for 10-12 h, grinding the freeze-dried solid for 3-4 h, and sieving by using a 100-mesh sieve to obtain an organic fertilizer;
(4) mixing perlite powder, coconut coir and water, placing the mixture in a homogenizer for pulping for 1-2 hours to obtain slurry, filling 1.0-1.5L of the slurry into a fermentation tank, adding 40-50 g of urea, 30-40 g of glucose, 70-80 g of organic fertilizer and 20-30 g of potassium nitrate into the fermentation tank, sealing the fermentation tank, placing the fermentation tank in a greenhouse at the temperature of 40-45 ℃, fermenting for 10-15 days while keeping the temperature, taking out the fermented product, placing the fermented product in a water bath, heating to 90-100 ℃, and carrying out evaporative concentration for 3-4 hours to obtain concentrated organic fertilizer;
(5) adding 80-100 parts by weight of distilled water into a stirring kettle, heating to 45-50 ℃, dripping 70-80 parts of the compound monomer into a three-neck flask by using a dropping funnel, adjusting the pH to 7-8 by using a sodium hydroxide solution with the mass fraction of 20% after dripping is finished, then adding 2-3 parts of sodium bisulfate and 0.8-1.0 part of potassium thiosulfate, and carrying out heat preservation reaction for 4-5 hours to obtain a liquid dispersant;
(6) and mixing the liquid dispersing agent, the concentrated organic fertilizer, glycine, ferrous chloride, hydroxylamine hydrochloride and copper sulfate, adding into a reaction kettle, heating to 40-45 ℃, stirring and dispersing at the rotating speed of 200-250 r/min, and reacting for 1-2 hours to obtain the organic compound fertilizer.
2. The method for preparing an organic compound fertilizer according to claim 1, wherein: the mixing mass ratio of the rice bran, the secondary sedimentation activated sludge and the water in the step (1) is 1: 5: 10.
3. The method for preparing an organic compound fertilizer according to claim 1, wherein: and (3) controlling the temperature of the high-pressure steam reaction kettle to be 110-140 ℃ and the pressure to be 3-6 MPa during cracking in the high-pressure steam reaction kettle in the step (2).
4. The method for preparing an organic compound fertilizer according to claim 1, wherein: the freeze drying temperature in the step (3) is controlled to be-30 to-20 ℃.
5. The method for preparing an organic compound fertilizer according to claim 1, wherein: and (4) mixing the perlite powder, the coconut coir and the water according to the mass ratio of 2: 1: 3.
6. The method for preparing an organic compound fertilizer according to claim 1, wherein: the liquid dispersant in the step (5) comprises, by weight, 80-100 parts of distilled water, 70-80 parts of a composite monomer, 2-3 parts of sodium bisulfate and 0.8-1.0 part of potassium thiosulfate.
7. The method for preparing an organic compound fertilizer according to claim 1, wherein: the composite monomer in the step (5) is obtained by mixing acrylic acid and maleic anhydride according to the mass ratio of 4: 1.
8. The method for preparing an organic compound fertilizer according to claim 1, wherein: the raw materials of the components for preparing the organic compound fertilizer in the step (6) comprise, by weight, 60-70 parts of a liquid dispersant, 18-20 parts of a concentrated organic fertilizer, 5-8 parts of glycine, 10-15 parts of ferrous chloride, 4-5 parts of hydroxylamine hydrochloride and 20-25 parts of copper sulfate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112154757A (en) * | 2020-09-30 | 2021-01-01 | 福建泉智生物科技有限公司 | Organic-inorganic matter balanced fertilization method for loquat |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503430A (en) * | 2018-04-24 | 2018-09-07 | 吴刚 | A kind of preparation method of humic acid system suspension type liquid fertilizer |
| CN109912338A (en) * | 2018-05-25 | 2019-06-21 | 佛山市高明区爪和新材料科技有限公司 | A kind of preparation method of slow-release compound fertilizer |
| CN109135340A (en) * | 2018-09-20 | 2019-01-04 | 方建波 | The preparation method of higher suspension nanometer calcium carbonate in a kind of water-based system |
| CN109181214A (en) * | 2018-09-28 | 2019-01-11 | 陈太师 | A kind of getting fat is retained the preparation method of degradable liquid-state mulch film |
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| CN112154757A (en) * | 2020-09-30 | 2021-01-01 | 福建泉智生物科技有限公司 | Organic-inorganic matter balanced fertilization method for loquat |
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Application publication date: 20200403 |