CN102363586B - Chitosan and sulfur coated special controlled-release fertilizer for wheat and preparation method thereof - Google Patents
Chitosan and sulfur coated special controlled-release fertilizer for wheat and preparation method thereof Download PDFInfo
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 83
- 241000209140 Triticum Species 0.000 title claims abstract description 58
- 235000021307 Triticum Nutrition 0.000 title claims abstract description 58
- 229920001661 Chitosan Polymers 0.000 title claims abstract description 53
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000013270 controlled release Methods 0.000 title claims abstract description 37
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 36
- 239000011593 sulfur Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000004202 carbamide Substances 0.000 claims abstract description 44
- 239000011248 coating agent Substances 0.000 claims abstract description 34
- 238000000576 coating method Methods 0.000 claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 13
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 13
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 12
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 12
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004021 humic acid Substances 0.000 claims abstract description 11
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 10
- 239000006012 monoammonium phosphate Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 claims description 8
- 238000012827 research and development Methods 0.000 claims description 6
- 210000003608 fece Anatomy 0.000 claims description 5
- 239000010871 livestock manure Substances 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 4
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 4
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 2
- 235000000396 iron Nutrition 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 235000015097 nutrients Nutrition 0.000 abstract description 19
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 229960001484 edetic acid Drugs 0.000 abstract 2
- 210000002700 urine Anatomy 0.000 abstract 2
- 239000013522 chelant Substances 0.000 abstract 1
- 235000015816 nutrient absorption Nutrition 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
- 238000013268 sustained release Methods 0.000 abstract 1
- 239000012730 sustained-release form Substances 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000002689 soil Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000009331 sowing Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 206010022971 Iron Deficiencies Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000351913 Pestalotiopsis funerea Species 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
-
- 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
Landscapes
- Fertilizers (AREA)
Abstract
The invention discloses a chitosan and sulfur coated special sustained-release fertilizer for wheat and a preparation method thereof, which belong to the technical field of controlled-release fertilizer. The fertilizer is based on the nutrient absorption law of wheat. The fertilizer is obtained by preparing 5-percent chitosan coated urea, 6-percent chitosan coated urine, sulfur coated urine, monoammonium phosphate, potassium chloride, humic acid and ethylene diamine tetraacetic acid (EDTA) chelate iron according to a specified mixing ratio, fully mixing, weighing and packaging. The special controlled-release fertilizer has the advantages of high nutrient utilization rate, environment pollution reduction due to degradability of the coating of the fertilizer, low price, consistence between nutrient release and wheat absorption law, labor cost conservation and improvement on quality of wheat.
Description
Technical field
The present invention relates to the slow-release or control-release fertilizer technical field, be specifically related to a kind of wheat special controlled release fertilizer and preparation method thereof.
Background technology
Wheat is one of human of paramount importance food crop, is the staple food grain of 1/3 population in the world, and in China, wheat is the second largest food crop that are only second to paddy rice, first of its cultivated area and the ultimate production Jun Ju countries in the world.Generally in the early or mid October sowing, breeding time is longer, generally needs 210-220 days from being seeded into maturation for wheat.Wheat is a kind of fertile more crop that needs, and under general cultivation condition, every production 100kg wheat grain needs from soil, to absorb about nitrogen 3kg, absorbs Vanadium Pentoxide in FLAKES 1-1.5kg, absorbs about potassium oxide 3kg, and the ratio of nitrogen, phosphorus, potassium is about 1:0.33:1.
According to existing fertilizer variety and fertilizer practice; China mainly adopts base manure and the mode of topdressing and combining aspect wheat fertilizing; The time applying the part fertilizer except that sowing in life of wheat, carry out at least topdressing for twice, topdress and generally adopt the surface to spread fertilizer over the fields and combine to water; Cause the fertilizer that imposes on soil surface because various approach such as volatilization, leaching and runoff lose in a large number, cause utilization rate of fertilizer low.A large amount of losses of chemical fertilizer have brought a series of environmental problems, therefore, how to improve utilization rate of fertilizer, give full play to the effect of chemical fertilizer, and Agricultural Sustainable Development in China is extremely important.
There are two problems in present controlled release fertilizer concerning wheat:
One, the price that controlled release is fertile in the world is higher than conventional fertilizer far away, is difficult to be difficult to promote aborning for the peasant accepts.
Two, common slow release fertilizer nutrient element releasing rule can't match with the wheat law of nutritive absorption.
At present, the inorganic coated fertilizer of the main research and utilization of domestic scholars, water-soluble polymer coated fertilizer etc. are produced controlled release fertilizer.Compare with common fertilizer; These fertilizer have certain slow release effect, but because coated fertilizer is water miscible, it is very big that their nutrient releasing speed is influenced by moisture content; Therefore; Long this vegetative period for wheat, it is relatively poor to water the big crop flexibility of the water yield, and the fertilizer nutrient releasing rule is difficult to match with the wheat law of nutritive absorption.
Therefore it is very necessary to develop and develop a kind of novel, efficient, cheap, biodegradable film coated wheat special-purpose control-release fertilizer.
Summary of the invention
Deficiency to prior art; Nutrient supplying capability according to wheat fertilizing soil can; Regulation of fertilizer requirement in conjunction with wheat growth; On the basis of double tower fused melt granulated compound fertilizer device, chitosan, sulfur-coated urea nutrient different controlled release fertilizer time of releasing are carried out composite, thereby invent out a kind of wheat special controlled release fertilizer.
Technical scheme of the present invention is following:
A kind of chitosan, sulfur coating wheat special controlled release fertilizer, the feed composition weight part is following:
5% chitosan coated urea 70-90 part,
6% chitosan coated urea 90-110 part,
Sulfur coating urea 170-220 part,
Monoammonium phosphate 250-450 part,
Repone K 120-320 part,
Humic acid 20-60 part,
EDTA chelated iron 5-10 part;
Above-mentioned raw materials is the commercially available prod, wherein:
Chitosan coated preparation method of urea is that dissolved chitosan solution under 100 ℃ of temperature is sprayed onto the urea granules surface equably, and oven dry gets final product;
5% chitosan coated urea is meant that the coating layer quality is 5% of a total mass, is produced by Stanley Fertilizer Co.,Ltd's research and development, and nitrogen phosphorus potassium mass percent is 43-0-0;
6% chitosan coated urea is meant that the coating layer quality is 6% of a total mass, is produced by Stanley Fertilizer Co.,Ltd's research and development, and nitrogen phosphorus potassium mass percent is 43-0-0;
Sulfur coating urea is produced by Stanley Fertilizer Co.,Ltd's research and development, and nitrogen phosphorus potassium mass percent is 36-0-0;
The total content of nitrogen is 12% in the monoammonium phosphate, and phosphorus pentoxide content is 61%, is mass percent;
Potassium oxide content is 55%-65% (60%) in the Repone K, is mass percent;
The humic acid molecular weight is 2000-5000, and nitrogen content is 1%-6%, is mass percent;
Iron level is 13% in the EDTA chelated iron, and chelated iron content >=98% is mass percent.
Chitosan of the present invention, sulfur coating wheat special controlled release fertilizer, the particle diameter of all raw materials are good in 2-5 millimeter scope all.
Chitosan of the present invention, sulfur coating wheat special controlled release fertilizer, the preferred feedstock ingredients weight parts is following:
5% chitosan coated urea 80-90 part,
6% chitosan coated urea 90-100 part,
Sulfur coating urea 185-200 part,
Monoammonium phosphate 295-425 part,
Repone K 135-300 part,
Humic acid 30-55 part,
EDTA chelated iron 5-8 part.
Chitosan of the present invention, sulfur coating wheat special controlled release fertilizer, most preferably the feed composition weight part is following:
85 parts in 5% chitosan coated urea,
100 parts in 6% chitosan coated urea,
185 parts in sulfur coating urea,
295 parts of monoammonium phosphates,
300 parts in Repone K,
30 parts of humic acid,
5 parts of EDTA chelated irons.
The preparation method of chitosan of the present invention, sulfur coating wheat special controlled release fertilizer puts into stirrer together with said each raw material and stirred 5-10 minute, and fully mixing with the fertilizer metering, the packing that mix, promptly gets then.
The fertilizing method of chitosan of the present invention, sulfur coating wheat special controlled release fertilizer is to be that base manure once applies at the wheat cultivation previous crops, need not impose again.
The present invention compared with prior art has following excellent results:
1, the plant recovery of nutrient in the fertilizer is high, and the biodegradable minimizing of fertilizer coating is to the pollution of environment, and is cheap, and nutrient discharges with the wheat absorbing rule and matches.
Research shows, wheat in breeding time to two peaks that are absorbed with of nitrogen: one is from tillering to surviving the winter, and another is that jointing arrives booting, and the amount of nitrogen sucking in these two periods accounts for 54% of wheat integral dose, is to inhale fertile maximum periods in each growthdevelopmental stage.Therefore, guarantee nitrogen supply in seedling stage, can promote to tiller before the winter, help cultivating strong sprout.Nitrogen is main with individual month sulfur coating urea of controlled release fate 1-3 in the wheat special controlled release fertilizer, adds a small amount of release period 3-4 month chitosan coated urea, in case the wheat later stage is taken off fertilizer.
2, reduce crop pest, improve crop yield
Owing to increased the EDTA chelated iron, can replenish ferro element for crop rapidly, can solve the iron deficiency symptoms such as yellow leat disease, pestalotiopsis funerea, hoja blanca of crop fast, strengthen photosynthesis simultaneously, improve disease-resistant anti-adversity ability, the promotion good quality and high output.
3, the nutrient controlled-release effect is good, and fertilizer efficiency period is long, saves labour cost
Coated fertilizer mainly is chitosan and sulphur in the wheat special controlled release fertilizer prescription, and these controlled release fertilizer nutrients discharge the influence that receives temperature and moisture simultaneously, and the nutrient controlled-release effect is good.The fertilizer efficiency period of wheat special controlled release fertilizer can reach 200-210 days, disposable applying, and need not topdress full vegetative period, simplifies the fertilising flow process, saves the labor force.
4, nutrient is comprehensive, reasonable ratio, and utilization rate of fertilizer is high
The nitrogenous proportioning of product is high, and nutrient is comprehensive, compares with common quick-acting chemical fertilizer, and wheat special controlled release fertilizer has significantly improved the chlorophyllous content of wheat, increases thousand seed weight, grain yield, the biological yield of wheat; Reduce fertilizer application frequency, saved labor capacity, improved utilization rate of fertilizer, had remarkable economic efficiency.
Embodiment
Below in conjunction with embodiment the present invention is done further explain, but be not limited thereto.
The raw materials used commercially available prod that is among the embodiment, wherein 5% chitosan coated urea is that Stanley Fertilizer Co.,Ltd produces, specification is 43-0-0; 6% chitosan coated urea is that Stanley Fertilizer Co.,Ltd produces, and specification is 43-0-0; Sulfur coating urea is that Stanley Fertilizer Co.,Ltd produces, and specification is 36-0-0; Nitrogen content is 12% in the monoammonium phosphate, and phosphorus pentoxide content is 61%, and quality is a per-cent; Potassium oxide content is 55%-65% in the Repone K raw material, and quality is a per-cent; The particle diameter of all raw materials is all in the 2-4mm scope.
Embodiment 1:Preparation chitosan, sulfur coating wheat special controlled release fertilizer, nitrogen phosphorus potassium (N-P
2O
5-K
2O) content is respectively 18%, 18%, 18%, is mass percent, and total nutrient is greater than 54%, and feed composition is following:
5% chitosan coated urea 85kg, 6% chitosan coated urea 100kg, sulfur coating urea 185kg, monoammonium phosphate 295kg, Repone K 300kg, humic acid 30kg, EDTA chelated iron 5kg;
Above-mentioned each raw material is put into stirrer together stirred 8 minutes, fully mixing gets final product, and measures then, packs, and promptly gets.
Embodiment 2:Preparation chitosan, sulfur coating wheat special controlled release fertilizer, nitrogen phosphorus potassium (N-P
2O
5-K
2O) content is respectively 20%, 26%, 8%, is mass percent, and total nutrient is greater than 54%, and feed composition is following:
5% chitosan coated urea 80kg, 6% chitosan coated urea 100kg, sulfur coating urea 200kg, monoammonium phosphate 425kg, Repone K 135kg, humic acid 55kg, EDTA chelated iron 5kg;
Above-mentioned each raw material is put into stirrer together stirred 9 minutes, fully mixing gets final product, and measures then, packs, and promptly gets.
Comparative Examples:
Ordinary compound fertilizer (total nutrient content 54%, Stanley Fertilizer Co.,Ltd produces)+common urea (the total content mass percent of N is 46%, and Stanley Fertilizer Co.,Ltd produces)
In year June in October, 2010 to 2011, Jun Zhai village, the king Gua Dian south of a town carries out field experiment to the applicant in the Feicheng, Shandong Province, and the experimental plot soil type is a brown earth; Quality is a loamy texture; 0-20cm soil layer soil contains full nitrogen 0.937g/kg, alkali-hydrolyzable nitrogen 94.58mg/kg, available potassium 71.46mg/kg; Available phosphorus 16.08mg/kg, available phosphorus 32.66mg/kg.
Experimental cultivar is a Jimai 22.
Chitosan, sulfur coating wheat special controlled release fertilizer are to be that base manure once applies at the wheat cultivation previous crops, need not impose again.Fertilizer is used by peasant habit and is divided base manure to use with topdressing in the Comparative Examples; Specific practice is; By the fertilizer amount of common compound fertilizer of per hectare 600kg and 400kg urea, turn over after composite fertilizer spreads fertilizer over the fields before wheat cultivation and bury in the Comparative Examples, urea spread fertilizer over the fields in soil surface in the jointing stage.Chitosan, each embodiment of sulfur coating wheat special controlled release fertilizer establish two fertilizer amounts, and one is identical with Comparative Examples fertilizer total nutrient amount, and another is that comparison reduces 30% than row total nutrient amount.Turn over after all chitosans, sulfur coating wheat special controlled release fertilizer all spread fertilizer over the fields before wheat cultivation and bury.Effect is seen table 1.
Can find out by table 1; Use chitosan of the present invention, (specification is respectively 18-18-18 to the sulfur coating wheat special controlled release fertilizer; Wheat increase yield rate 20-26-8) is significantly higher than Comparative Examples, respectively up to 24.5% and 23.7%, even the total nutrient amount reduces by 30%; The wheat increase yield rate also reaches 10.3% and 9.7% respectively, obvious effect of increasing production.Therefore, compare with ordinary compound fertilizer, the obvious effect of increasing production of chitosan of the present invention, sulfur coating wheat special controlled release fertilizer, utilization rate of fertilizer is high, saves labor, and is worthy to be popularized.
The effect table of table 1 different treatment applying fertilizer kind and consumption
Claims (6)
1. a chitosan, sulfur coating wheat special controlled release fertilizer is characterized in that the feed composition weight part is following:
5% chitosan coated urea 70-90 part,
6% chitosan coated urea 90-110 part,
Sulfur coating urea 170-220 part,
Monoammonium phosphate 250-450 part,
Repone K 120-320 part,
Humic acid 20-60 part,
EDTA chelated iron 5-10 part;
Above-mentioned raw materials is the commercially available prod, wherein:
Said chitosan coated preparation method of urea is that dissolved chitosan solution under 100 ℃ of temperature is sprayed onto the urea granules surface equably, and oven dry gets final product;
Said 5% chitosan coated urea is meant that the coating layer quality is 5% of a total mass, is produced by Stanley Fertilizer Co.,Ltd's research and development, and nitrogen phosphorus potassium mass percent is 43-0-0;
Said 6% chitosan coated urea is meant that the coating layer quality is 6% of a total mass, is produced by Stanley Fertilizer Co.,Ltd's research and development, and nitrogen phosphorus potassium mass percent is 43-0-0;
Said sulfur coating urea is produced by Stanley Fertilizer Co.,Ltd's research and development, and nitrogen phosphorus potassium mass percent is 36-0-0;
The total content of nitrogen is 12% in the said monoammonium phosphate, and phosphorus pentoxide content is 61%, is mass percent;
Potassium oxide content is 55%-65% in the said Repone K, is mass percent;
Said humic acid molecular weight is 2000-5000, and nitrogen content is 1%-6%, is mass percent;
Iron level is 13% in the said EDTA chelated iron, and chelated iron content >=98% is mass percent.
2. chitosan, sulfur coating wheat special controlled release fertilizer according to claim 1, it is characterized in that: the particle diameter of all raw materials is all in 2-5 millimeter scope.
3. chitosan, sulfur coating wheat special controlled release fertilizer according to claim 1 or claim 2 is characterized in that the feed composition weight part is following:
5% chitosan coated urea 80-90 part,
6% chitosan coated urea 90-100 part,
Sulfur coating urea 185-200 part,
Monoammonium phosphate 295-425 part,
Repone K 135-300 part,
Humic acid 30-55 part,
EDTA chelated iron 5-8 part.
4. like the said chitosan of claim 3, sulfur coating wheat special controlled release fertilizer, it is characterized in that the feed composition weight part is following:
85 parts in 5% chitosan coated urea,
100 parts in 6% chitosan coated urea,
185 parts in sulfur coating urea,
295 parts of monoammonium phosphates,
300 parts in Repone K,
30 parts of humic acid,
5 parts of EDTA chelated irons.
5. like the preparation method of the said chitosan of claim 4, sulfur coating wheat special controlled release fertilizer, said each raw material is put into stirrer together stirred 5-10 minute, fully mixing with the fertilizer metering, the packing that mix, promptly gets then.
6. like the fertilizing method of the said chitosan of claim 4, sulfur coating wheat special controlled release fertilizer, be to be that base manure once applies at the wheat cultivation previous crops, need not impose again.
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| CN102675002A (en) * | 2012-06-04 | 2012-09-19 | 史丹利化肥股份有限公司 | Efficient multifunctional selenium-rich fertilizer and production process thereof |
| CN102850132B (en) * | 2012-09-24 | 2014-03-26 | 菏泽金正大生态工程有限公司 | Preparation method of mechanically fertilized controlled-release fertilizer special for winter wheat |
| CN104355888A (en) * | 2014-11-18 | 2015-02-18 | 刘健 | Formulated fertilizer for wheat |
| CN104355890A (en) * | 2014-11-18 | 2015-02-18 | 刘健 | Blended formulated fertilizer applied to wheat |
| CN104788241B (en) * | 2015-04-30 | 2017-12-08 | 河南神州大化肥业有限公司 | A kind of special humic acid controlled release Blending Fertilizer of wheat |
| CN110304969A (en) * | 2019-08-13 | 2019-10-08 | 苏建平 | A kind of wheat special controlled release fertilizer, preparation method and its application |
| CN111153738A (en) * | 2020-01-13 | 2020-05-15 | 中化农业（临沂）研发中心有限公司 | Sustained-release synergistic wheat topless special fertilizer and preparation method thereof |
| CN114181015B (en) * | 2021-12-30 | 2022-11-15 | 中农金瑞肥业有限公司 | Composite slow-release compound fertilizer special for wheat and preparation method thereof |
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|---|---|---|---|---|
| CN101857490A (en) * | 2010-05-18 | 2010-10-13 | 张超 | Slow/controlled-release compound fertilizer suitable for field crops |
| CN101941859A (en) * | 2010-08-25 | 2011-01-12 | 菏泽金正大生态工程有限公司 | Nutritional composition fertilizer for paddy rice |
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| US8212074B2 (en) * | 2009-10-26 | 2012-07-03 | Srinivas Kilambi | Nano-scale urea particles and methods of making and using the particles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857490A (en) * | 2010-05-18 | 2010-10-13 | 张超 | Slow/controlled-release compound fertilizer suitable for field crops |
| CN101941859A (en) * | 2010-08-25 | 2011-01-12 | 菏泽金正大生态工程有限公司 | Nutritional composition fertilizer for paddy rice |
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Address after: 276700 Linshu Economic Development Zone, Linyi, Shandong Patentee after: STANLEY agricultural group Limited by Share Ltd Address before: 276700 Linshu Economic Development Zone, Linyi, Shandong Patentee before: Stanley Fertilizer Stock Co., Ltd. |