CN103159549A - Preparation method of slow-release long-acting sulfur-based nitrogen potassium compound fertilizer - Google Patents
Preparation method of slow-release long-acting sulfur-based nitrogen potassium compound fertilizer Download PDFInfo
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- CN103159549A CN103159549A CN2012105742564A CN201210574256A CN103159549A CN 103159549 A CN103159549 A CN 103159549A CN 2012105742564 A CN2012105742564 A CN 2012105742564A CN 201210574256 A CN201210574256 A CN 201210574256A CN 103159549 A CN103159549 A CN 103159549A
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Abstract
The invention provides a preparation method of slow-release long-acting sulfur-based nitrogen potassium compound fertilizer. The slow-release long-acting sulfur-based nitrogen potassium compound fertilizer belongs to compound fertilizer which contains material influencing digestion of ammonium compounds or urea in soil. The preparation method of the slow-release long-acting sulfur-based nitrogen potassium compound fertilizer is characterized by including the following steps of preparing sulfur-based nitrogen potassium compound fertilizer granules at first and then conducting once stearic acidand coating and secondary modified zeolite power application on the sulfur-based nitrogen potassium compound fertilizer granules to obtain the slow-release long-acting sulfur-based nitrogen potassium compound fertilizer, wherein the sulfur-based nitrogen potassium compound granules comprise, by weight, 31-57 parts of urea, 10-20 parts of ammonium sulfate, 20-50 parts of potassium sulfate, 6-12 parts of granulation promoter, and appropriate water. The slow-release long-acting sulfur-based nitrogen potassium compound fertilizer prepared through the preparation method is good in slow-release effect, high in fertilizer utilization efficiency, simple in technology, low in production cost, beneficial to protection of the soil, the atmosphere and the water environment due to the fact that coating film material is prone to being degraded through microorganism in the soil, and wide in application range. The slow-release long-acting sulfur-based nitrogen potassium compound fertilizer is appropriate for grain crops, vegetables and fruits and used for seed fertilizer, base fertilizer and topdressing fertilizer. In addition, the slow-release long-acting sulfur-based nitrogen potassium compound fertilizer can be mixed with all kinds of market phosphoric fertilizer or compound phosphoric fertilizer to be used.
Description
Technical field
The present invention is a kind of preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material.Belong to the mixed fertilizer that contains influential ammonium compound or urea material of digestion in soil.
Background technology
The content of chlorion is called chlorine-based compound fertilizer over 3% composite fertilizer, and chloro fertilizer is with respect to sulfenyl fertilizer, and low cost of manufacture, selling price also are starkly lower than sulfenyl fertilizer.But because there is negative impact in the chlorine-based compound fertilizer material to the growth of some fear-chlorion crop, chloride chemical fertilizer such as Repone K, ammonium chloride avoid imposing on salt affected soil and fear-chlorion crop.Residual being accumulated in soil of chlorion meeting in chloride chemical fertilizer causes soil acidification, uses in the saltings and can increase the weight of salt damage; Use on fear-chlorion crop, can affect yield and quality.Therefore the range of application of chlorine-based compound fertilizer is restricted.
Element sulphur in S-based compound fertilizer is the necessary the fourth-largest nutritive element of the plant growth after nitrogen, chlorine, potassium, and chloride ion content＜3% can effectively improve the lack of soil sulfur situation, for crop directly provides the sulphur nutrient.S-based compound fertilizer is wide for strong adaptability, the use range of crop and soil, can be used as base manure, topdresses, seed manure and foliage top dressing.Effectively improve the output of crop and the quality of agricultural-food, therefore be widely applied.
The production of sulfur-based compound fertilizer complex process, production energy consumption is high, and etching apparatus, waste resource cause production cost high, and contaminate environment.
The high-quality nitrogenous fertilizer that urea is nitrogenous height, fertilizer efficiency is fast, consumption is large.But, urea in use, easily run off by approach such as volatilization, leaching, decomposition and runoffs, cause the fertilizer efficiency utilization ratio not high, according to statistics, the this season utilization ratio only has 30% left and right, and this has not only caused the waste of chemical fertilizer, and the environment of depending on for existence for mankind such as atmosphere, water body soil.Sulphur based compound fertilizer plant recovery of nutrient of the prior art is only 25%～35%, and wherein the N fertilizer utilization rate less than 30%, the loss especially severe.
Chinese patent CN201110258810.3 discloses a kind of high tower prilling slow release long-acting high nitrogen sulfur base compound manure and preparation method thereof; at first prepare high tower prilling urea compound fertilizer granule through the high tower prilling device, then the urea compound fertilizer particle is carried out paraffin and once coat to coat with the modified zeolite powder surface second and make.Its weak point is that high tower prilling facility investment expense is high, and paraffin is non-renewable fossil resource, and is difficult for degraded in soil.The compound fertilizer production with tower granulation material product that adopts above-mentioned preparation method to produce, slow release effect is not good enough.
Coating controlled-release fertilizer of the prior art, endoplasm type Controlled Release Fertilizer, stable Controlled Release Fertilizer, biological inhibition formulation Controlled Release Fertilizer, its coated slow-release material adopts sulphur or synthetic resins more, and wherein the sulphur film is easily broken, and the crops such as paddy rice class are easily produced the murder by poisoning side effect.Coated with resin is expensive and be difficult in degraded in soil.
In prior art, the preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material is also rare.
Summary of the invention
The object of the invention is to avoid above-mentioned weak point of the prior art; and provide a kind of had good sustained release effect; the fertilizer efficiency utilization ratio is high; technique is simple; production cost is lower; coated fertilizer is easy to by the microbiological deterioration in soil, is of value to soil, atmosphere and water body environment protection, the preparation method of the slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material that the scope of application is wide in range.
Purpose of the present invention can reach by following measure:
The preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of the present invention, it is characterized in that at first making sulfonyl nitrogen-potassium compound fertilizer material particle, then sulfonyl nitrogen-potassium compound fertilizer material particle is carried out stearic acid and once coat with modified zeolite powder secondary surface face powder and make, wherein: described chloro composite N-K fertilizer particle is made by following raw material in parts by weight:
Described granulation aid is mixed by the bauxitic clay powder of 50%～75% wilkinite and 50%～25% and is formed;
Described stearic acid once coats, and stearic acid dosage is 0.6%～1.2% of sulfonyl nitrogen-potassium compound fertilizer material granular mass;
Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 1.5%～.3.0%
Zeolite powder 97%～98.5%
Its preparation method comprises the steps:
1.. the preparation of sulfonyl nitrogen-potassium compound fertilizer material particle
At first after urea 31～57 weight part heating and meltings, add ammonium sulfate 10～20 weight parts and vitriolate of tartar 20～50 weight parts to mix, add granulating agent 6～12 weight parts, water is appropriate.Utilize traditional tablets press with each component mixing granulation of described compound manure, standby;
2. the .. stearic acid once coats
Stearic consumption is 0.6%～1.2% of the chloro composite N-K fertilizer granular mass that 1. prepares of step, and method for coating is as follows:
A.. the stearic preparation of melting
Coating after according to the formula accurate-metering, in input stearic acid fusion tank, is heated to molten state with stearic acid, and is standby;
B.. coat
1. the sulfonyl nitrogen-potassium compound fertilizer material particle for preparing according to formula accurate-metering step, melting stearic acid with step a preparation, carry out spray coating outside particle in drum-type mixing granulation machine, make the compound fertilizer granule outside surface form coating as far as possible uniformly, warm air drying, room temperature wind are cooling, standby; Processing condition are as follows:
The warm air drying temperature is not higher than 80 ℃
The cooling draught temperature is not higher than 50 ℃;
3.. the surperficial face powder of modified zeolite powder secondary
A. the face powder preparation of mixed powder
According to Magnesium Stearate 1.5%～3.0%, the proportioning raw materials of zeolite powder 97%～98.5% accurately takes respectively each component of raw material, mixes, and grinding flour is controlled powder fineness and crossed 120 mesh sieves, and is standby;
B. apply powder
The mixed powder consumption of step a preparation is controlled at every 1000kg chloro composite N-K fertilizer particle face powder 10～15kg;
4.. screening, metering, quality test, qualified rear packing makes slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour.
At first the preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of the present invention makes sulfonyl nitrogen-potassium compound fertilizer material particle, then sulfonyl nitrogen-potassium compound fertilizer material particle is carried out stearic acid and once coats with modified zeolite powder secondary surface face powder and make.Be mainly after utilizing urea melting liquid and ammonium sulfate, vitriolate of tartar potassium mixing, utilize traditional tablets press with each component mixing granulation of described compound manure, production technique is easy, and the high drawback of high tower prilling facility investment expense has been avoided in useful environment protection.
The coated fertilizer that the present invention adopts can be degraded under the soil microorganisms effect, and stearic acid is easy to decompose generation CO under the effect of soil microorganisms
2And H
2O has avoided the pollution of coated fertilizer to environment, has saved fossil resource, is conducive to the eubiosis.
S-based compound fertilizer is wide for strong adaptability, the use range of crop and soil, can be used as base manure, topdresses, seed manure and foliage top dressing.Effectively improve the output of crop and the quality of agricultural-food, overcome the defective that chloro fertilizer exists.
Purpose of the present invention can also reach by following measure:
The preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of the present invention is characterized in that described sulfonyl nitrogen-potassium compound fertilizer material particle made by following raw material in parts by weight:
It is preferred technical scheme.
The preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of the present invention is characterized in that described chloro composite N-K fertilizer particle made by following raw material in parts by weight:
It is a preferred technical scheme.
The preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of the present invention is characterized in that described preparation method comprises the steps:
Its preparation method comprises the steps:
1.. the preparation of sulfonyl nitrogen-potassium compound fertilizer material particle
At first after urea 35～50 weight part heating and meltings, add ammonium sulfate 10～20 weight parts and vitriolate of tartar 30～45 weight parts to mix, add granulating agent 8～10 weight parts, water is appropriate.Utilize traditional tablets press with each component mixing granulation of described compound manure, standby;
2. the .. stearic acid once coats
Stearic consumption is 1.2% of the sulfonyl nitrogen-potassium compound fertilizer material granular mass that 1. prepares of step, and method for coating is as follows:
A.. the stearic preparation of melting
Coating after according to the formula accurate-metering, in input stearic acid fusion tank, is heated to molten state with stearic acid, and is standby;
B.. coat
1. the sulfonyl nitrogen-potassium compound fertilizer material particle for preparing according to formula accurate-metering step, melting stearic acid with step a preparation, carry out spray coating outside particle in drum-type mixing granulation machine, make the compound fertilizer granule outside surface form coating as far as possible uniformly, warm air drying, room temperature wind are cooling, standby; Processing condition are as follows:
The warm air drying temperature 60 C
40 ℃ of cooling draught temperature;
3.. the surperficial face powder of modified zeolite powder secondary
A. the face powder preparation of mixed powder
According to Magnesium Stearate 2.5%, the proportioning raw materials of zeolite powder 97.5% accurately takes respectively each component of raw material, mixes, and grinding flour is controlled powder fineness and crossed 120 mesh sieves, and is standby;
B. apply powder
The mixed powder consumption of step a preparation is controlled at every 1000kg chloro composite N-K fertilizer particle face powder 10kg;
4.. screening, metering, quality test, qualified rear packing makes slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour.
It is preferred preparation method's technical scheme.
The long-acting sulfonyl nitrogen-potassium compound fertilizer material of releasing according to preparation method's preparation of the slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of claim 1 is characterized in that quality product reaches following technical indicator:
N constituent content % 〉=18
K
2O content % 〉=10
Grain graininess mm 2～4.75mm
Moisture content wt%≤2.0.
The application of releasing long-acting sulfonyl nitrogen-potassium compound fertilizer material according to the preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of the present invention preparation is characterized in that being applicable to food crop, fruit and vegetables is as seed manure, base manure and topdress and use.
The application of releasing long-acting sulfonyl nitrogen-potassium compound fertilizer material according to the preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of the present invention preparation is characterized in that mixing with various commercially available phosphate fertilizer or compound phosphatic fertilizer and uses.
The preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of the present invention has following positively effect compared to existing technology:
1. a kind of had good sustained release effect is provided, and the fertilizer efficiency utilization ratio is high, and technique is simple; production cost is lower; coated fertilizer is easy to by the microbiological deterioration in soil, is of value to soil, atmosphere and water body environment protection, the preparation method of the slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material that the scope of application is wide in range.
2. individual layer coating, generating process is simple, low equipment investment, low cost of manufacture,
3. coated fertilizer can be degraded under the soil microorganisms effect, has avoided the pollution of coated fertilizer to edatope.
4. the coated fertilizer that adopts can be degraded under the soil microorganisms effect, and stearic acid is easy to decompose generation CO under the effect of soil microorganisms
2And H
2O has avoided the pollution of coated fertilizer to environment, has saved fossil resource, is conducive to the eubiosis.
5. S-based compound fertilizer is wide for strong adaptability, the use range of crop and soil, can be used as base manure, topdresses, seed manure and foliage top dressing.Effectively improve the output of crop and the quality of agricultural-food, overcome the defective that chloro fertilizer exists.
6. use flexibly, mix with various commercially available compound phosphatic fertilizers and use.To be adapted to various crops and different soil condition to the demand of npk nutrient.
7. had good sustained release effect, utilization rate of fertilizer is high.Be suitable for food crop, fruit and vegetables is as seed manure, base manure and topdress and use.
8. the application of the slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of preparation method's preparation of the present invention, is characterized in that mixing with various commercially available compound phosphatic fertilizers and use.The average utilization rate of fertilizer 11.1%～19.3% that improves on average improves output 5.7%～17.3% to food crop, on average improves output 13.1～27.9% for fruit tree, greengrocery.
Embodiment
The present invention will now be further detailed embodiment:
Embodiment 1
Prepare a kind of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material according to the following step
1.. the preparation of sulfonyl nitrogen-potassium compound fertilizer material particle
At first after urea 45 weight part heating and meltings, add ammonium sulfate 12 weight parts and vitriolate of tartar 35 weight parts to mix, add granulating agent 8 weight parts, water is appropriate.Utilize traditional tablets press with each component mixing granulation of described compound manure, standby;
2. the .. stearic acid once coats
Stearic consumption is 0.6%～1.2% of the chloro composite N-K fertilizer granular mass that 1. prepares of step, and method for coating is as follows:
A.. the stearic preparation of melting
Coating after according to the formula accurate-metering, in input stearic acid fusion tank, is heated to molten state with stearic acid, and is standby;
B.. coat
1. the sulfonyl nitrogen-potassium compound fertilizer material particle for preparing according to formula accurate-metering step, melting stearic acid with step a preparation, carry out spray coating outside particle in drum-type mixing granulation machine, make the compound fertilizer granule outside surface form coating as far as possible uniformly, warm air drying, room temperature wind are cooling, standby; Processing condition are as follows:
The warm air drying temperature is not higher than 80 ℃
The cooling draught temperature is not higher than 50 ℃;
3.. the surperficial face powder of modified zeolite powder secondary
A. the face powder preparation of mixed powder
According to Magnesium Stearate 1.5%～3.0%, the proportioning raw materials of zeolite powder 97%～98.5% accurately takes respectively each component of raw material, mixes, and grinding flour is controlled powder fineness and crossed 120 mesh sieves, and is standby;
B. apply powder
The mixed powder consumption of step a preparation is controlled at every 1000kg chloro composite N-K fertilizer particle face powder 10～15kg;
4.. screening, metering, quality test, qualified rear packing makes slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour;
Quality product reaches following technical indicator:
N constituent content % 〉=18
K
2O content % 〉=10
Grain graininess mm 2～4.75mm
Moisture content wt%≤2.0.
Embodiment 2～embodiment 7
According to method and the step of embodiment 1, according to the formula of table 1, preparation slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material
Table 1
| Raw material | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 |
| Urea | 50 | 40 | 51 | 43 | 57 | 31 |
| Ammonium sulfate | 10 | 20 | 10 | 17 | 11 | 14 |
| Vitriolate of tartar | 30 | 33 | 30 | 30 | 20 | 50 |
| Granulation aid | 10 | 7 | 9 | 10 | 12 | 6 |
| Water | In right amount | In right amount | In right amount | In right amount | In right amount | In right amount |
The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour;
Quality product reaches following technical indicator:
N constituent content % 〉=18
K
2O content % 〉=10
Grain graininess mm 2～4.75mm
Moisture content wt%≤2.0.
Embodiment 1～embodiment 7 makes that slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material all is suitable for food crop, fruit and vegetables is as seed manure, base manure and topdresses and use.Can also mix with various commercially available compound phosphatic fertilizers and use.The average utilization rate of fertilizer 11.1%～19.3% that improves on average improves output 5.7%～17.3% to food crop, on average improves output 13.1～27.9 % for fruit tree, greengrocery.
Claims (7)
1. the preparation method of a slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material, it is characterized in that at first making sulfonyl nitrogen-potassium compound fertilizer material particle, then sulfonyl nitrogen-potassium compound fertilizer material particle is carried out stearic acid and once coat with modified zeolite powder secondary surface face powder and make, wherein: described chloro composite N-K fertilizer particle is made by following raw material in parts by weight:
Urea 31～57
Ammonium sulfate 10～20
Vitriolate of tartar 20～50
Granulation aid 6～12
Water is appropriate
Described granulation aid is mixed by the bauxitic clay powder of 50%～75% wilkinite and 50%～25% and is formed;
Described stearic acid once coats, and stearic acid dosage is 0.6%～1.2% of sulfonyl nitrogen-potassium compound fertilizer material granular mass;
Described modified zeolite powder is comprised of following raw material by weight percentage:
Zinic stearas 1.5%～.3.0%
Zeolite powder 97%～98.5%
Described preparation method comprises the steps:
1.. the preparation of sulfonyl nitrogen-potassium compound fertilizer material particle
At first after urea 31～57 weight part heating and meltings, add ammonium sulfate 10～20 weight parts and vitriolate of tartar 20～50 weight parts to mix, add granulating agent 6～12 weight parts, water is appropriate.Utilize traditional tablets press with each component mixing granulation of described compound manure, standby;
2. the .. stearic acid once coats
Stearic consumption is 0.6%～1.2% of the chloro composite N-K fertilizer granular mass that 1. prepares of step, and method for coating is as follows:
A.. the stearic preparation of melting
Coating after according to the formula accurate-metering, in input stearic acid fusion tank, is heated to molten state with stearic acid, and is standby;
B.. coat
1. the sulfonyl nitrogen-potassium compound fertilizer material particle for preparing according to formula accurate-metering step, melting stearic acid with step a preparation, carry out spray coating outside particle in drum-type mixing granulation machine, make the compound fertilizer granule outside surface form coating as far as possible uniformly, warm air drying, room temperature wind are cooling, standby; Processing condition are as follows:
The warm air drying temperature is not higher than 80 ℃
The cooling draught temperature is not higher than 50 ℃;
3.. the surperficial face powder of modified zeolite powder secondary
A. the face powder preparation of mixed powder
According to Magnesium Stearate 1.5%～3.0%, the proportioning raw materials of zeolite powder 97%～98.5% accurately takes respectively each component of raw material, mixes, and grinding flour is controlled powder fineness and crossed 120 mesh sieves, and is standby;
B. apply powder
The mixed powder consumption of step a preparation is controlled at every 1000kg chloro composite N-K fertilizer particle face powder 10～15kg;
4.. screening, metering, quality test, qualified rear packing makes slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour.
2. according to claim 1 the preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material is characterized in that described sulfonyl nitrogen-potassium compound fertilizer material particle made by following raw material in parts by weight:
Urea 35～50
Ammonium sulfate 10～20
Vitriolate of tartar 30～45
Granulation aid 8～10
Water is appropriate.
3. according to claim 1 the preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material is characterized in that described chloro composite N-K fertilizer particle made by following raw material in parts by weight:
Urea 45
Ammonium sulfate 12
Vitriolate of tartar 35
Granulation aid 8
Water is appropriate.
4. according to claim 1 the preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material, is characterized in that described preparation method comprises the steps:
Described preparation method comprises the steps:
1.. the preparation of sulfonyl nitrogen-potassium compound fertilizer material particle
At first after urea 35～50 weight part heating and meltings, add ammonium sulfate 10～20 weight parts and vitriolate of tartar 30～45 weight parts to mix, add granulating agent 8～10 weight parts, water is appropriate.Utilize traditional tablets press with each component mixing granulation of described compound manure, standby;
2. the .. stearic acid once coats
Stearic consumption is 1.2% of the sulfonyl nitrogen-potassium compound fertilizer material granular mass that 1. prepares of step, and method for coating is as follows:
A.. the stearic preparation of melting
Coating after according to the formula accurate-metering, in input stearic acid fusion tank, is heated to molten state with stearic acid, and is standby;
B.. coat
1. the sulfonyl nitrogen-potassium compound fertilizer material particle for preparing according to formula accurate-metering step, melting stearic acid with step a preparation, carry out spray coating outside particle in drum-type mixing granulation machine, make the compound fertilizer granule outside surface form coating as far as possible uniformly, warm air drying, room temperature wind are cooling, standby; Processing condition are as follows:
The warm air drying temperature 60 C
40 ℃ of cooling draught temperature;
3.. the surperficial face powder of modified zeolite powder secondary
A. the face powder preparation of mixed powder
According to Magnesium Stearate 2.5%, the proportioning raw materials of zeolite powder 97.5% accurately takes respectively each component of raw material, mixes, and grinding flour is controlled powder fineness and crossed 120 mesh sieves, and is standby;
B. apply powder
The mixed powder consumption of step a preparation is controlled at every 1000kg chloro composite N-K fertilizer particle face powder 10kg;
4.. screening, metering, quality test, qualified rear packing makes the preparation method of slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material; The products obtained therefrom particle appearance is mellow and full, the product free from extraneous odour.
5. according to the long-acting sulfonyl nitrogen-potassium compound fertilizer material of releasing of preparation method's preparation of the slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of claim 1, it is characterized in that quality product reaches following technical indicator:
N constituent content % 〉=18
K
2O content % 〉=10
Grain graininess mm 2～4.75mm
Moisture content wt%≤2.0.
6. according to the application of releasing long-acting sulfonyl nitrogen-potassium compound fertilizer material of preparation method's preparation of the slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of claim 1, it is characterized in that being applicable to food crop, fruit and vegetables is as seed manure, base manure and topdress and use.
7. according to the application of releasing long-acting sulfonyl nitrogen-potassium compound fertilizer material of preparation method's preparation of the slow release long-acting sulfonyl nitrogen-potassium compound fertilizer material of claim 1, it is characterized in that mixing with various commercially available phosphate fertilizer or compound phosphatic fertilizer and use.
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Cited By (3)
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| CN103159550A (en) * | 2012-12-26 | 2013-06-19 | 施可丰化工股份有限公司 | Environment-friendly slow-release sulfur-based nitrogen potassium compound fertilizer |
| CN105272607A (en) * | 2015-10-26 | 2016-01-27 | 富川富兴果蔬有限责任公司 | Controlled-release fertilizer for leaf mustard and preparation method of fertilizer |
| CN108821888A (en) * | 2018-08-28 | 2018-11-16 | 海南莲华生态文化股份有限公司 | A kind of compound fertilizer formula of water lily |
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| CN102603386A (en) * | 2011-09-02 | 2012-07-25 | 史丹利化肥股份有限公司 | High-tower granulation slow-release long-acting high-nitrogen sulfenyl compound fertilizer and preparation method thereof |
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| CN103159550A (en) * | 2012-12-26 | 2013-06-19 | 施可丰化工股份有限公司 | Environment-friendly slow-release sulfur-based nitrogen potassium compound fertilizer |
| CN105272607A (en) * | 2015-10-26 | 2016-01-27 | 富川富兴果蔬有限责任公司 | Controlled-release fertilizer for leaf mustard and preparation method of fertilizer |
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