CN102173937A - Composite nitrogen fertilizer and production method thereof - Google Patents
Composite nitrogen fertilizer and production method thereof Download PDFInfo
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- CN102173937A CN102173937A CN2011100297832A CN201110029783A CN102173937A CN 102173937 A CN102173937 A CN 102173937A CN 2011100297832 A CN2011100297832 A CN 2011100297832A CN 201110029783 A CN201110029783 A CN 201110029783A CN 102173937 A CN102173937 A CN 102173937A
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Abstract
The invention discloses a composite nitrogen fertilizer and a production method thereof. The composite nitrogen fertilizer comprises the following raw materials in parts by weight: 5-25 parts of urea, 10-30 parts of urea slurries, 15-40 parts of ammonium chloride, 10-30 parts of ammonium sulfate, 1-8 parts of microelement fertilizers, 5-12 parts of bentonites, 0.04-0.40 part of polyacrylamide, 0.01-0.06 part of compound sodium nitrophenolate, 0.02-0.05 part of colorants and 0.2-0.6 part of anticaking agents. The production method comprises the following steps of: metering, crushing and uniformly mixing the urea, the ammonium chloride, the ammonium sulfate, the microelement fertilizers, the bentonites, the polyacrylamide, the compound sodium nitrophenolate and the colorants, and then delivering into a rotary drum granulator; spraying the urea slurries; carrying out second-stage drying, cooling and size screening, and then placing into a film wrapping machine; spraying the anticaking agents; and uniformly mixing, metering, and packaging to obtain finished products. The composite nitrogen fertilizer has the advantages of high nitrogen fertilizer utilization ratio, obvious crop yield increase, easy appearance recognition, low cost and high benefit.
Description
Technical field
The present invention relates to technical field of fertilizers, specifically is a kind of composite nitrogen fertilizer and production method thereof.
Background technology
Chemical fertilizer plays a significantly greater role to the production of agricultural, the use of chemical fertilizer is depended in about 50% of world food volume increase, wherein nitrogenous fertilizer is to use maximum a kind of chemical fertilizer on China's agricultural, nitrogen is one of essential macronutrient of farm crop, and nitrogen product mainly contains urea, ammonium chloride, ammonium sulfate, bicarbonate of ammonia, ammonium nitrate and liquefied ammonia.But, reactivity is strong because modern nitrogen fertilizers is solvable, quick-acting to crop, be easy to run off or with soil interaction after lose, use irrational measure in addition, reduced utilization rate of fertilizer, caused the wasting of resources, environmental pollution and agricultural product quality to descend, caused the potential threat to human existence.According to measuring and calculating, the volatilization loss of China's nitrogen is the most serious, and nitrogenous fertilizer this season utilization ratio is about 30%-35%, is 60% level far below developed country's nitrogen utilization efficiency.
For improving utilization rate of nitrogen fertilizer, reduce the environmental pollution that causes because of nitrogen fertilizer application, the exploitation slow-release nitrogen fertilizer has extremely important meaning.Slow-release nitrogen fertilizer is the fertilizer nutrient rate of release much smaller than the rate of release that changes the plant effective state nutrient after instantly-soluble nitrogenous fertilizer is manured into soil into, the nitrogenous fertilizer that slow-release nitrogen fertilizer is made, can reduce product solubility, delayed nutrient release rate, can be continued to absorb for plant by chemistry or physics method.Generally slow-release nitrogen fertilizer is divided into two classes: the one, synthetic organic long-acting nitrogenous fertilizer mainly comprises urea formaldehyde condenses, urea acetaldehyde condensation thing and minority amides; The 2nd, coating nitrogenous fertilizer is wrapped other coating substances of one or more layers semipermeability or insoluble and the fertilizer made at particle surface, and the normal coated fertilizer that adopts has sulphur, resin, polyethylene, paraffin, pitch, grease, ground phosphate rock, fused(calcium magnesium)phosphate etc.These products are all being obtained effect preferably aspect the utilization rate of nitrogen fertilizer improving, but because of complex manufacturing, and manufacturing cost is high and fail by large scale application.Therefore, that obvious, the fertilizer efficiency of exploitation effect of increasing production continues is long, cost is low, raw material environmental protection, less investment, the simple NEW TYPE OF COMPOSITE nitrogenous fertilizer of production, thereby improves utilization rate of nitrogen fertilizer, reduces nitrogen fertilizer amount, alleviating the pollution that nitrogen application brings, is the key issue that the present invention will solve.
Summary of the invention
A kind of composite nitrogen fertilizer and production method thereof have been the purpose of this invention is to provide.The composite nitrogen fertilizer effect of increasing production that the inventive method is produced is obvious, fertilizer efficiency continues long, low, the raw material environmental protection of cost, and its production technique is simple.
The present invention adopts following technical scheme for achieving the above object:
A kind of composite nitrogen fertilizer is characterized in that, the weight part of its feed composition is:
Urea 5-25 part
Urine slurry 10-30 part
Ammonium chloride 15-40 part
Ammonium sulfate 10-30 part
Little fertile 1-8 part
Wilkinite 5-12 part
Polyacrylamide 0.04-0.40 part
Sodium nitrophenolate 0.01-0.06 part
Tinting material 0.02-0.05 part
Anti-hard caking agent 0.2-0.6 part.
Described composite nitrogen fertilizer is characterized in that: described urine slurry is that mass percentage concentration is 95% urea soln.
Described composite nitrogen fertilizer is characterized in that: described little fertilizer is one or more mixtures in borax, zinc sulfate, copper sulfate, ferrous sulfate, manganous sulfate, the ammonium molybdate.
Described composite nitrogen fertilizer is characterized in that: described tinting material is to be selected from a kind of in lemon yellow, organic yellow, orange, permanent yellow, Lithol Red, toluidine red, permanent bordeaux, pthalocyanine blue, bright orchid, phthalocyanine green, the brilliant black.
Described composite nitrogen fertilizer, it is characterized in that: described anti-hard caking agent is made up of diatomite, attapulgite, sodium laurylsulfonate, sodium polyacrylate, and the weight proportion of each component is a diatomite: attapulgite: sodium laurylsulfonate: sodium polyacrylate=10: (6-10): (0.4-1.6): (0.2-1.4).
Described composite nitrogen fertilizer is characterized in that: described urea contains that N 〉=46.2%, ammonium chloride contain N 〉=24.0%, ammonium sulfate contains granularity 〉=80 orders of N 〉=20.0%, bentonitic granularity 〉=200 orders, polyacrylamide, granularity 〉=400 orders of anti-hard caking agent.
The production method of described composite nitrogen fertilizer is characterized in that: specifically comprise the steps:
(1) by weight than urea, ammonium chloride, ammonium sulfate, little fertilizer, wilkinite, polyacrylamide, sodium nitrophenolate, tinting material being carried out proportioning, fragmentation and mixing, sends in the rotary drum granulator;
(2) in tablets press, spray steam and urine slurry, material reunion granulating;
(3) particle after the granulation is carried out two-stage drying, cooling and thickness screening, the particle of screening back particle diameter 2.0-4.5mm enters in the coating machine, returns fragmentation greater than the 4.5mm macrobead, returns granulation less than the 2.0mm particulate;
(4) anti-hard caking agent is delivered to the even sprayed particle of coating machine front end surface,, makes finished product through metering, packing.
The production method of described composite nitrogen fertilizer is characterized in that: finished product grain size is in the 2.0-4.5mm scope.
Advantage of the present invention is as follows:
(1) slow release effect is obvious, the utilization rate of fertilizer height.Utilize the cation exchange property and the absorption property of wilkinite excellence, silicon in the wilkinite montmorillonite in silicon-oxy tetrahedron and the alumina octahedral, aluminum ion are produced the interlayer negative charge by other non-equivalence cation replacement, the mode of fertilizer nutrient by chemistry and physical adsorption is fixed between its crystal layer, utilize the flocculence of poly amic acid then, make up more firm composite structure in granule interior, effectively slowed down fertilizer nutrient release.Ammonium nitrogen is easily directly absorbed by crop in the product, puies forward fast fertilizer efficiency; Amidonitrogen needs just to be absorbed by crop after being converted into ammonium nitrogen under the urase effect, prolongs fertilizer efficiency period; Chlorion can effectively suppress the conversion of ammonium nitrogen to nitric nitrogen in the product, reduces the loss of nitrogenous fertilizer, the widespread pollution from the overuse of fertilizers and pesticides in rural area that deduction and exemption fertilizer brings.
(2) fertilizer efficiency height, increasing both production and income.Sodium nitrophenolate can promote crop cell division and propagation, helps chlorophyll and protein synthesis; Sulphur is the essential middle amount nutritive element of plant growth, and nitrogen, sulphur and trace element cooperate more can improve the crop economy proterties, improves crop yield.Use this product and can reduce fertilizer application frequency, reduce the fertilising cost, avoid disposable using in a large number and the seedling phenomenon occurs burning, reduced the trouble of topdressing in part dense planting crop later stage field.
(3) less investment, high efficiency.Raw material sources are wide, obtain easily, and are cheap, effectively reduce the batching cost, and the slow-release material degraded is fast, does not have the secondary pollution problem.Production technique is simple, and is easy to operate, and facility investment is few, and granulation balling ratio height is enhanced productivity, and cuts down the consumption of energy.
(4) good product performance, market outlook are wide.Product appearance is smooth, mellow and full, the intensity height, and moisture is low, and dissolving is slow, do not lump, not efflorescence, product appearance color even and firm, products of different specifications is managed to make do into different colours, makes things convenient for User Recognition; Product can be produced the bulk blended fertilizer with sustained release performance with being mixed with size particles phosphate fertilizer, granular potash fertilizer.
Description of drawings
Fig. 1 is the technological process of production figure of composite nitrogen fertilizer of the present invention.
Embodiment
Embodiment 1
Total N 〉=26% composite nitrogen fertilizer, concrete technological operation step is as follows:
(1) it is lemon yellow to measure 9.49kg urea (containing N-46.2%), 35.60kg ammonium chloride (containing N-24.0%), 26.11kg ammonium sulfate (containing N-20.0%), 1.19kg manganous sulfate (containing Mn-30.0%), 9.49kg wilkinite, 0.24kg polyacrylamide, 0.04kg sodium nitrophenolate, 0.04kg respectively, with above raw material crushing, mix, send in the rotary drum granulator;
(2) in the tablets press said mixture material is sprayed 17.80kg urine slurry;
(3) adopt two-stage drying, cooling and thickness screening, the particle of screening back particle diameter 2.0-4.5mm enters in the coating machine, returns fragmentation greater than the 4.5mm macrobead, returns granulation less than the 2.0mm particulate;
(4) to the qualified particle of screening back particle diameter per ton, use the spiral speed regulation transfer roller to add the 3.51kg anti-hard caking agent at the coating machine front end, the weight proportion of each component of anti-hard caking agent is a diatomite: attapulgite: sodium laurylsulfonate: sodium polyacrylate=10: 6.9: 0.6: 0.4, the good fertilizer of coating makes finished product through metering, packing.
Embodiment 2
Total N 〉=28% composite nitrogen fertilizer, concrete technological operation step is as follows:
(1) measures 12.00kg urea (containing N-46.2%), 30.00kg ammonium chloride (containing N-24.0%), 24.00kg ammonium sulfate (containing N-20.0%), 1.80kg zinc sulfate (containing Zn-21.0%), 7.80kg wilkinite, 0.36kg polyacrylamide, 0.02kg sodium nitrophenolate, 0.02kg pthalocyanine blue respectively, with above raw material crushing, mix, send in the rotary drum granulator;
(2) in the tablets press said mixture material is sprayed 24.00kg urine slurry;
(3) adopt two-stage drying, cooling and thickness screening, the particle of screening back particle diameter 2.0-4.5mm enters in the coating machine, returns fragmentation greater than the 4.5mm macrobead, returns granulation less than the 2.0mm particulate;
(4) to the qualified particle of screening back particle diameter per ton, use the spiral speed regulation transfer roller to add the 4.82kg anti-hard caking agent at the coating machine front end, the weight proportion of each component of anti-hard caking agent is a diatomite: attapulgite: sodium laurylsulfonate: sodium polyacrylate=10: 7.5: 0.8: 0.8, the good fertilizer of coating makes finished product through metering, packing.
Embodiment 3
Total N 〉=30% composite nitrogen fertilizer, concrete technological operation step is as follows:
(1) measures 19.06kg urea (containing N-46.2%), 31.76kg ammonium chloride (containing N-24.0%), 15.88kg ammonium sulfate (containing N-20.0%), 1.27kg copper sulfate (containing Cu-25.0%), 7.94kg wilkinite, 0.21kg polyacrylamide, 0.03kg sodium nitrophenolate, 0.03kg permanent bordeaux respectively, with above raw material crushing, mix, send in the rotary drum granulator;
(2) in the tablets press said mixture material is sprayed 23.82kg urine slurry;
(3) adopt two-stage drying, cooling and thickness screening, the particle of screening back particle diameter 2.0-4.5mm enters in the coating machine, returns fragmentation greater than the 4.5mm macrobead, returns granulation less than the 2.0mm particulate;
(4) to the qualified particle of screening back particle diameter per ton, use the spiral speed regulation transfer roller to add the 3.21kg anti-hard caking agent at the coating machine front end, the weight proportion of each component of anti-hard caking agent is a diatomite: attapulgite: sodium laurylsulfonate: sodium polyacrylate=10: 8.2: 1.4: 1.0, the good fertilizer of coating makes finished product through metering, packing.
Embodiment 4
Total N 〉=32% composite nitrogen fertilizer, concrete technological operation step is as follows:
(1) measures 23.36kg urea (containing N-46.2%), 24.72kg ammonium chloride (containing N-24.0%), 13.73kg ammonium sulfate (containing N-20.0%), 2.06kg borax (containing B-10.6%), 6.87kg wilkinite, 0.38kg polyacrylamide, 0.01kg sodium nitrophenolate, 0.03kg phthalocyanine green respectively, with above raw material crushing, mix, send in the rotary drum granulator;
(2) in the tablets press said mixture material is sprayed 28.84kg urine slurry;
(3) adopt two-stage drying, cooling and thickness screening, the particle of screening back particle diameter 2.0-4.5mm enters in the coating machine, returns fragmentation greater than the 4.5mm macrobead, returns granulation less than the 2.0mm particulate;
(4) to the qualified particle of screening back particle diameter per ton, use the spiral speed regulation transfer roller to add the 4.12kg anti-hard caking agent at the coating machine front end, the weight proportion of each component of anti-hard caking agent is a diatomite: attapulgite: sodium laurylsulfonate: sodium polyacrylate=10: 7.8: 1.0: 0.9, the good fertilizer of coating makes finished product through metering, packing.
Claims (8)
1. a composite nitrogen fertilizer is characterized in that, the weight part of its feed composition is:
Urea 5-25 part
Urine slurry 10-30 part
Ammonium chloride 15-40 part
Ammonium sulfate 10-30 part
Little fertile 1-8 part
Wilkinite 5-12 part
Polyacrylamide 0.04-0.40 part
Sodium nitrophenolate 0.01-0.06 part
Tinting material 0.02-0.05 part
Anti-hard caking agent 0.2-0.6 part.
2. composite nitrogen fertilizer according to claim 1 is characterized in that: described urine slurry is that mass percentage concentration is 95% urea soln.
3. composite nitrogen fertilizer according to claim 1 is characterized in that: described little fertilizer is selected from one or more mixtures in borax, zinc sulfate, copper sulfate, ferrous sulfate, manganous sulfate, the ammonium molybdate.
4. composite nitrogen fertilizer according to claim 1 is characterized in that: described tinting material is selected from a kind of in lemon yellow, organic yellow, orange, permanent yellow, Lithol Red, toluidine red, permanent bordeaux, pthalocyanine blue, bright orchid, phthalocyanine green, the brilliant black.
5. composite nitrogen fertilizer according to claim 1, it is characterized in that: described anti-hard caking agent is made up of diatomite, attapulgite, sodium laurylsulfonate, sodium polyacrylate, and the weight proportion of each component is a diatomite: attapulgite: sodium laurylsulfonate: sodium polyacrylate=10: (6-10): (0.4-1.6): (0.2-1.4).
6. composite nitrogen fertilizer according to claim 1 is characterized in that: described urea contains that N 〉=46.2%, ammonium chloride contain N 〉=24.0%, ammonium sulfate contains granularity 〉=80 orders of N 〉=20.0%, bentonitic granularity 〉=200 orders, polyacrylamide, granularity 〉=400 orders of anti-hard caking agent.
7. the production method of composite nitrogen fertilizer as claimed in claim 1 is characterized in that: specifically comprise the steps:
(1) by weight than urea, ammonium chloride, ammonium sulfate, little fertilizer, wilkinite, polyacrylamide, sodium nitrophenolate, tinting material being carried out proportioning, fragmentation and mixing, sends in the rotary drum granulator;
(2) in tablets press, spray steam and urine slurry, material reunion granulating;
(3) particle after the granulation is carried out two-stage drying, cooling and thickness screening, the particle of screening back particle diameter 2.0-4.5mm enters in the coating machine, returns fragmentation greater than the 4.5mm macrobead, returns granulation less than the 2.0mm particulate;
(4) anti-hard caking agent is delivered to the even sprayed particle of coating machine front end surface,, makes finished product through metering, packing.
8. the production method of composite nitrogen fertilizer according to claim 7, it is characterized in that: finished product grain size is in the 2.0-4.5mm scope.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584352A (en) * | 2012-03-27 | 2012-07-18 | 何勇 | Nitrogenous fertilizer |
| CN102731212A (en) * | 2012-07-10 | 2012-10-17 | 湖北富邦科技股份有限公司 | Granulation anticaking multifunctional assistant for diammonium phosphate |
| CN103086803A (en) * | 2013-02-28 | 2013-05-08 | 中国科学院遗传与发育生物学研究所农业资源研究中心 | Lumbrukinase compound fertilizer and preparation method thereof |
| CN103664370A (en) * | 2013-12-05 | 2014-03-26 | 中盐安徽红四方股份有限公司 | Urea-ammonium mixed nitrogen fertilizer and production method thereof |
| CN103664369A (en) * | 2013-12-05 | 2014-03-26 | 中盐安徽红四方股份有限公司 | Synergism and lost control fertilizer and preparation method thereof |
| CN103804069A (en) * | 2014-03-14 | 2014-05-21 | 中盐安徽红四方股份有限公司 | Controlled-release fertilizer and production method thereof |
| CN103804102A (en) * | 2012-11-13 | 2014-05-21 | 邳州金成肥业有限公司 | Synergic composite nitrogen fertilizer and preparation method thereof |
| CN103936527A (en) * | 2013-11-29 | 2014-07-23 | 河北农业大学 | Special water-retention controlled-release nitrogen fertilizer for wheat |
| CN103951528A (en) * | 2014-05-26 | 2014-07-30 | 云南云叶化肥股份有限公司 | Controlled release compound fertilizer and preparation method thereof |
| CN104926536A (en) * | 2015-07-03 | 2015-09-23 | 刘彬 | Production method of discoloring anti-counterfeit water-soluble microelement fertilizer |
| CN105418245A (en) * | 2015-12-16 | 2016-03-23 | 湖北富邦科技股份有限公司 | Colored powdery compound fertilizer anti-caking agent prepared from organic pigment and application thereof |
| CN105541466A (en) * | 2015-12-16 | 2016-05-04 | 湖北富邦科技股份有限公司 | Colored oily fertilizer anticaking agent prepared from organic pigment and use thereof |
| CN105967873A (en) * | 2016-05-16 | 2016-09-28 | 安徽省龙晨肥业有限公司 | Growth-promoting KOMU nitro-sulfenyl compound fertilizer |
| CN107698355A (en) * | 2017-11-20 | 2018-02-16 | 常州大学 | A kind of slow-release nitrogen fertilizer |
| CN108863600A (en) * | 2018-08-29 | 2018-11-23 | 江苏省地矿复合肥厂 | A kind of compound fertilizer's agglomeration resistance and preparation method thereof |
| CN109134051A (en) * | 2018-10-31 | 2019-01-04 | 华中农业大学 | It is a kind of based on rice-ratooning rice head season Rice Panicle granulated fertilizer fertilizer and preparation method |
| CN110668875A (en) * | 2019-11-04 | 2020-01-10 | 山西华鑫肥业股份有限公司 | Production method of high-sulfur full-water-soluble nitro-sulfur-based nitrogen fertilizer granules |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265139A (en) * | 2008-04-18 | 2008-09-17 | 沈刚 | Iodine-enriched seaweed fertilizer and manufacturing method thereof |
| CN101921149A (en) * | 2010-08-24 | 2010-12-22 | 中盐安徽红四方股份有限公司 | Filler-free synergistic compound fertilizer produced by urine syrup ammonia-acid method and production method thereof |
-
2011
- 2011-01-27 CN CN2011100297832A patent/CN102173937A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265139A (en) * | 2008-04-18 | 2008-09-17 | 沈刚 | Iodine-enriched seaweed fertilizer and manufacturing method thereof |
| CN101921149A (en) * | 2010-08-24 | 2010-12-22 | 中盐安徽红四方股份有限公司 | Filler-free synergistic compound fertilizer produced by urine syrup ammonia-acid method and production method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李莉等: "控失肥生产工艺的研究", 《安徽化工》 * |
| 陈翠玲等: "《园艺土壤肥料学》", 30 June 1999, 中国农业科技出版社 * |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102584352A (en) * | 2012-03-27 | 2012-07-18 | 何勇 | Nitrogenous fertilizer |
| CN102731212A (en) * | 2012-07-10 | 2012-10-17 | 湖北富邦科技股份有限公司 | Granulation anticaking multifunctional assistant for diammonium phosphate |
| CN102731212B (en) * | 2012-07-10 | 2013-11-20 | 湖北富邦科技股份有限公司 | Granulation anticaking multifunctional assistant for diammonium phosphate |
| CN103804102A (en) * | 2012-11-13 | 2014-05-21 | 邳州金成肥业有限公司 | Synergic composite nitrogen fertilizer and preparation method thereof |
| CN103086803A (en) * | 2013-02-28 | 2013-05-08 | 中国科学院遗传与发育生物学研究所农业资源研究中心 | Lumbrukinase compound fertilizer and preparation method thereof |
| CN103936527A (en) * | 2013-11-29 | 2014-07-23 | 河北农业大学 | Special water-retention controlled-release nitrogen fertilizer for wheat |
| CN103664370A (en) * | 2013-12-05 | 2014-03-26 | 中盐安徽红四方股份有限公司 | Urea-ammonium mixed nitrogen fertilizer and production method thereof |
| CN103664369A (en) * | 2013-12-05 | 2014-03-26 | 中盐安徽红四方股份有限公司 | Synergism and lost control fertilizer and preparation method thereof |
| CN103664369B (en) * | 2013-12-05 | 2015-12-30 | 中盐安徽红四方股份有限公司 | A kind of synergy loss controlling fertilizer and preparation method thereof |
| CN103804069A (en) * | 2014-03-14 | 2014-05-21 | 中盐安徽红四方股份有限公司 | Controlled-release fertilizer and production method thereof |
| CN103804069B (en) * | 2014-03-14 | 2016-02-10 | 中盐安徽红四方股份有限公司 | A kind of slow release fertilizer and production method thereof |
| CN103951528A (en) * | 2014-05-26 | 2014-07-30 | 云南云叶化肥股份有限公司 | Controlled release compound fertilizer and preparation method thereof |
| CN103951528B (en) * | 2014-05-26 | 2015-12-30 | 云南云叶化肥股份有限公司 | A kind of control mistake type composite fertilizer and preparation method thereof |
| CN104926536A (en) * | 2015-07-03 | 2015-09-23 | 刘彬 | Production method of discoloring anti-counterfeit water-soluble microelement fertilizer |
| CN105418245A (en) * | 2015-12-16 | 2016-03-23 | 湖北富邦科技股份有限公司 | Colored powdery compound fertilizer anti-caking agent prepared from organic pigment and application thereof |
| CN105541466A (en) * | 2015-12-16 | 2016-05-04 | 湖北富邦科技股份有限公司 | Colored oily fertilizer anticaking agent prepared from organic pigment and use thereof |
| CN105967873A (en) * | 2016-05-16 | 2016-09-28 | 安徽省龙晨肥业有限公司 | Growth-promoting KOMU nitro-sulfenyl compound fertilizer |
| CN107698355A (en) * | 2017-11-20 | 2018-02-16 | 常州大学 | A kind of slow-release nitrogen fertilizer |
| CN108863600A (en) * | 2018-08-29 | 2018-11-23 | 江苏省地矿复合肥厂 | A kind of compound fertilizer's agglomeration resistance and preparation method thereof |
| CN109134051A (en) * | 2018-10-31 | 2019-01-04 | 华中农业大学 | It is a kind of based on rice-ratooning rice head season Rice Panicle granulated fertilizer fertilizer and preparation method |
| CN110668875A (en) * | 2019-11-04 | 2020-01-10 | 山西华鑫肥业股份有限公司 | Production method of high-sulfur full-water-soluble nitro-sulfur-based nitrogen fertilizer granules |
| CN110668875B (en) * | 2019-11-04 | 2022-05-17 | 山西华鑫肥业股份有限公司 | Production method of high-sulfur full-water-soluble nitro-sulfur-based nitrogen fertilizer particles |
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Application publication date: 20110907 |