CN105399544A - Slow release composite fertilizer and preparation method thereof - Google Patents
Slow release composite fertilizer and preparation method thereof Download PDFInfo
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- CN105399544A CN105399544A CN201510991670.9A CN201510991670A CN105399544A CN 105399544 A CN105399544 A CN 105399544A CN 201510991670 A CN201510991670 A CN 201510991670A CN 105399544 A CN105399544 A CN 105399544A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
- C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
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Abstract
The invention discloses a slow release composite fertilizer and a preparation method thereof. The slow release composite fertilizer is prepared from, by weight, 20-40 parts of urea formaldehyde, 5-13 parts of potassium chloride, 5-13 parts of potassium nitrate, 7-15 parts of ammonium sulfate, 8-16 parts of a medium and trace element chelating solution, 20-30 parts of water, 6-14 parts of monoammonium phosphate and 1-5 parts of a coating material. The preparation method comprises the following steps: mixing above raw materials, and granulating the obtained mixture to obtain the slow release composite fertilizer. The slow release function of nitrogen and phosphorus elements is realized after coating treatment of an organic nitrogen fertilizer and a phosphate fertilizer, and the medium and trace element chelating solution prepared through combining an aqueous ammonium polyphosphate solution obtained by mixing ammonium polyphosphate and water with medium and trace elements is adopted to greatly improve the fertilizer effect of the slow release composite fertilizer, so nutrition components required in the growth process of crops are completely met, and growth of the crops is guaranteed; and raw materials adopted in the invention are nontoxic and harmless, so the slow release composite fertilizer is a green and environmentally-friendly slow release composite fertilizer.
Description
Technical field
The present invention relates to fertilizer manufacture technology field, be specifically related to a kind of slow-release compound fertilizer and preparation method thereof.
Background technology
Slowly-releasing refers to that chemical substance nutrient release rate is much smaller than the rate of release changing plant effective state nutrient after Quick-dissolving fertilizer is manured into soil into, and fertilizer amount reduces, and utilization ratio improves.Slow-release fertilizer fertilizer efficiency is than the length more than 30 days of general non-coating, and leaching volatilization loss reduces, and fertilizer amount can reduce 10-20% than conventional fertilizer application, reaches cost-saving object.
Because slow release fertilizer has the advantage not available for common fertilizer, therefore the present inventor is from the angle of slowly-releasing N, P two kinds of elements, coordinates the interpolation of medium trace element to provide a kind of efficient, green slow-release compound fertilizer and preparation method thereof.
Summary of the invention
The present invention aims to provide a kind of slow-release compound fertilizer and preparation method thereof, to solve the problem that numerous slow-release compound fertilizer slow release effect is poor, pollution is large, nutritive ingredient is single.
The present invention is achieved by the following technical programs:
A kind of slow-release compound fertilizer, it is made up of following raw material: urea formaldehyde 20-40 part, Repone K 5-13 part, saltpetre 5-13 part, ammonium sulfate 7-15 part, medium trace element chelating liquid 8-16 part, water 20-30 part, monoammonium phosphate 6-14 part, coated fertilizer 1-5 part.
Described slow-release compound fertilizer is made up of following raw material: urea formaldehyde 25-35 part, Repone K 7-11 part, saltpetre 7-11 part, ammonium sulfate 9-13 part, medium trace element chelating liquid 10-14 part, water 23-27 part, monoammonium phosphate 8-12 part, coated fertilizer 2-4 part.
Described slow-release compound fertilizer is made up of following raw material: urea formaldehyde 30 parts, 9 parts, Repone K, 9 parts, saltpetre, 11 parts, ammonium sulfate, medium trace element chelating liquid 12 parts, 25 parts, water, monoammonium phosphate 10 parts, coated fertilizer 3 parts.
Described medium trace element chelating liquid is by first ammonium polyphosphate and water being mixed to get the ammonium polyphosphate aqueous solution according to the ratio that weight ratio is 1:2, add the inorganic salt containing medium trace element to the ammonium polyphosphate aqueous solution obtained again, constant temperature is obtained medium trace element chelating liquid after stirring chelating.
Moderate-element in the inorganic salt of described medium trace element is 3:1 with the mass ratio of trace element.
The temperature of the inorganic salt constant temperature stirring that the described ammonium polyphosphate aqueous solution adds containing medium trace element controls to be 45 DEG C, and the time is 35-45h, and stirring velocity is 30r/min.
Described coated fertilizer is chitosan.
Present invention also offers the preparation method of above-mentioned slow-release compound fertilizer, the method comprises the following steps:
A, mixing: urea formaldehyde, Repone K, saltpetre, ammonium sulfate, water, monoammonium phosphate are mixed in rear feeding tablets press;
B, granulation: in the process of granulation, spray medium trace element chelating liquid, then mixture will be obtained after super-dry, cooling;
C, finished product: sent into by mixture in coating machine, after adopting coated fertilizer to carry out sprinkling process to mixture, namely obtain slow-release compound fertilizer finished product.
Beneficial effect of the present invention is: the present invention passes through organic nitrogenous fertilizer, phosphate fertilizer is after coating process, achieve nitrogen, the slow-release function of phosphorus two kinds of elements, to combine with medium trace element the medium trace element chelating liquid prepared by ammonium polyphosphate and water being mixed to get the ammonium polyphosphate aqueous solution in the feed, significantly can promote the fertilizer efficiency of this slow-release compound fertilizer, meet the nutritive ingredient that farm crop are required in process of growth completely, for the growth of farm crop provides guarantee, and the advantages of nontoxic raw materials that the present invention adopts, harmless, it is a kind of slow-release compound fertilizer of environmental protection.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further described, but described in claimed scope is not limited to.
Embodiment one
Formula: urea formaldehyde 20 parts, 5 parts, Repone K, 5 parts, saltpetre, 7 parts, ammonium sulfate, medium trace element chelating liquid 8 parts, 20 parts, water, monoammonium phosphate 6 parts, coated fertilizer 1 part.
Medium trace element chelating liquid and preparation method thereof: first ammonium polyphosphate and water are mixed to get the ammonium polyphosphate aqueous solution according to the ratio that weight ratio is 1:2, the inorganic salt containing medium trace element are added again to the ammonium polyphosphate aqueous solution obtained, constant temperature is obtained medium trace element chelating liquid after stirring chelating, moderate-element in the inorganic salt of medium trace element is 3:1 with the mass ratio of trace element, the temperature of the inorganic salt constant temperature stirring that the ammonium polyphosphate aqueous solution adds containing medium trace element controls to be 45 DEG C, time is 35h, and stirring velocity is 30r/min.
Slow-release compound fertilizer preparation method:
A, mixing: urea formaldehyde, Repone K, saltpetre, ammonium sulfate, water, monoammonium phosphate are mixed in rear feeding tablets press;
B, granulation: in the process of granulation, spray medium trace element chelating liquid, then mixture will be obtained after super-dry, cooling;
C, finished product: sent into by mixture in coating machine, after adopting chitosan to carry out sprinkling process to mixture, namely obtain slow-release compound fertilizer finished product.
Embodiment two
Formula: urea formaldehyde 40 parts, 13 parts, Repone K, 13 parts, saltpetre, 15 parts, ammonium sulfate, medium trace element chelating liquid 16 parts, 30 parts, water, monoammonium phosphate 14 parts, coated fertilizer 5 parts.
Medium trace element chelating liquid and preparation method thereof: first ammonium polyphosphate and water are mixed to get the ammonium polyphosphate aqueous solution according to the ratio that weight ratio is 1:2, the inorganic salt containing medium trace element are added again to the ammonium polyphosphate aqueous solution obtained, constant temperature is obtained medium trace element chelating liquid after stirring chelating, moderate-element in the inorganic salt of medium trace element is 3:1 with the mass ratio of trace element, the temperature of the inorganic salt constant temperature stirring that the ammonium polyphosphate aqueous solution adds containing medium trace element controls to be 45 DEG C, time is 45h, and stirring velocity is 30r/min.
Slow-release compound fertilizer preparation method:
A, mixing: urea formaldehyde, Repone K, saltpetre, ammonium sulfate, water, monoammonium phosphate are mixed in rear feeding tablets press;
B, granulation: in the process of granulation, spray medium trace element chelating liquid, then mixture will be obtained after super-dry, cooling;
C, finished product: sent into by mixture in coating machine, after adopting chitosan to carry out sprinkling process to mixture, namely obtain slow-release compound fertilizer finished product.
Embodiment three
Formula: urea formaldehyde 25 parts, 7 parts, Repone K, 7 parts, saltpetre, 9 parts, ammonium sulfate, medium trace element chelating liquid 10 parts, 23 parts, water, monoammonium phosphate 8 parts, coated fertilizer 2 parts.
Medium trace element chelating liquid and preparation method thereof: first ammonium polyphosphate and water are mixed to get the ammonium polyphosphate aqueous solution according to the ratio that weight ratio is 1:2, the inorganic salt containing medium trace element are added again to the ammonium polyphosphate aqueous solution obtained, constant temperature is obtained medium trace element chelating liquid after stirring chelating, moderate-element in the inorganic salt of medium trace element is 3:1 with the mass ratio of trace element, the temperature of the inorganic salt constant temperature stirring that the ammonium polyphosphate aqueous solution adds containing medium trace element controls to be 45 DEG C, time is 38h, and stirring velocity is 30r/min.
Slow-release compound fertilizer preparation method:
A, mixing: urea formaldehyde, Repone K, saltpetre, ammonium sulfate, water, monoammonium phosphate are mixed in rear feeding tablets press;
B, granulation: in the process of granulation, spray medium trace element chelating liquid, then mixture will be obtained after super-dry, cooling;
C, finished product: sent into by mixture in coating machine, after adopting chitosan to carry out sprinkling process to mixture, namely obtain slow-release compound fertilizer finished product.
Embodiment four
Formula: urea formaldehyde 35 parts, 11 parts, Repone K, 11 parts, saltpetre, 13 parts, ammonium sulfate, medium trace element chelating liquid 14 parts, 27 parts, water, monoammonium phosphate 12 parts, coated fertilizer 4 parts.
Medium trace element chelating liquid and preparation method thereof: first ammonium polyphosphate and water are mixed to get the ammonium polyphosphate aqueous solution according to the ratio that weight ratio is 1:2, the inorganic salt containing medium trace element are added again to the ammonium polyphosphate aqueous solution obtained, constant temperature is obtained medium trace element chelating liquid after stirring chelating, moderate-element in the inorganic salt of medium trace element is 3:1 with the mass ratio of trace element, the temperature of the inorganic salt constant temperature stirring that the ammonium polyphosphate aqueous solution adds containing medium trace element controls to be 45 DEG C, time is 42h, and stirring velocity is 30r/min.
Slow-release compound fertilizer preparation method:
A, mixing: urea formaldehyde, Repone K, saltpetre, ammonium sulfate, water, monoammonium phosphate are mixed in rear feeding tablets press;
B, granulation: in the process of granulation, spray medium trace element chelating liquid, then mixture will be obtained after super-dry, cooling;
C, finished product: sent into by mixture in coating machine, after adopting chitosan to carry out sprinkling process to mixture, namely obtain slow-release compound fertilizer finished product.
Embodiment five
Formula: urea formaldehyde 30 parts, 9 parts, Repone K, 9 parts, saltpetre, 11 parts, ammonium sulfate, medium trace element chelating liquid 12 parts, 25 parts, water, monoammonium phosphate 10 parts, coated fertilizer 3 parts.
Medium trace element chelating liquid and preparation method thereof: first ammonium polyphosphate and water are mixed to get the ammonium polyphosphate aqueous solution according to the ratio that weight ratio is 1:2, the inorganic salt containing medium trace element are added again to the ammonium polyphosphate aqueous solution obtained, constant temperature is obtained medium trace element chelating liquid after stirring chelating, moderate-element in the inorganic salt of medium trace element is 3:1 with the mass ratio of trace element, the temperature of the inorganic salt constant temperature stirring that the ammonium polyphosphate aqueous solution adds containing medium trace element controls to be 45 DEG C, time is 40h, and stirring velocity is 30r/min.
Slow-release compound fertilizer preparation method:
A, mixing: urea formaldehyde, Repone K, saltpetre, ammonium sulfate, water, monoammonium phosphate are mixed in rear feeding tablets press;
B, granulation: in the process of granulation, spray medium trace element chelating liquid, then mixture will be obtained after super-dry, cooling;
C, finished product: sent into by mixture in coating machine, after adopting chitosan to carry out sprinkling process to mixture, namely obtain slow-release compound fertilizer finished product.
Claims (8)
1. a slow-release compound fertilizer, it is characterized in that: it is made up of following raw material: urea formaldehyde 20-40 part, Repone K 5-13 part, saltpetre 5-13 part, ammonium sulfate 7-15 part, medium trace element chelating liquid 8-16 part, water 20-30 part, monoammonium phosphate 6-14 part, coated fertilizer 1-5 part.
2. slow-release compound fertilizer according to claim 1, it is characterized in that: described slow-release compound fertilizer is made up of following raw material: urea formaldehyde 25-35 part, Repone K 7-11 part, saltpetre 7-11 part, ammonium sulfate 9-13 part, medium trace element chelating liquid 10-14 part, water 23-27 part, monoammonium phosphate 8-12 part, coated fertilizer 2-4 part.
3. slow-release compound fertilizer according to claim 1, it is characterized in that: described slow-release compound fertilizer is made up of following raw material: urea formaldehyde 30 parts, 9 parts, Repone K, 9 parts, saltpetre, 11 parts, ammonium sulfate, medium trace element chelating liquid 12 parts, 25 parts, water, monoammonium phosphate 10 parts, coated fertilizer 3 parts.
4. according to the arbitrary described slow-release compound fertilizer of claim 1-3, it is characterized in that: described medium trace element chelating liquid is by first ammonium polyphosphate and water being mixed to get the ammonium polyphosphate aqueous solution according to the ratio that weight ratio is 1:2, add the inorganic salt containing medium trace element to the ammonium polyphosphate aqueous solution obtained again, constant temperature is obtained medium trace element chelating liquid after stirring chelating.
5. slow-release compound fertilizer according to claim 4, is characterized in that: the moderate-element in the inorganic salt of described medium trace element is 3:1 with the mass ratio of trace element.
6. slow-release compound fertilizer according to claim 4, is characterized in that: the temperature of the inorganic salt constant temperature stirring that the described ammonium polyphosphate aqueous solution adds containing medium trace element controls to be 45 DEG C, and the time is 35-45h, and stirring velocity is 30r/min.
7., according to the arbitrary described slow-release compound fertilizer of claim 1-3, it is characterized in that: described coated fertilizer is chitosan.
8. a preparation method for the slow-release compound fertilizer as described in as arbitrary in claim 1-3, is characterized in that: the method comprises the following steps:
A, mixing: urea formaldehyde, Repone K, saltpetre, ammonium sulfate, water, monoammonium phosphate are mixed in rear feeding tablets press;
B, granulation: in the process of granulation, spray medium trace element chelating liquid, then mixture will be obtained after super-dry, cooling;
C, finished product: sent into by mixture in coating machine, after adopting coated fertilizer to carry out sprinkling process to mixture, namely obtain slow-release compound fertilizer finished product.
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| CN201510991670.9A CN105399544A (en) | 2015-12-25 | 2015-12-25 | Slow release composite fertilizer and preparation method thereof |
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| CN201510991670.9A CN105399544A (en) | 2015-12-25 | 2015-12-25 | Slow release composite fertilizer and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187519A (en) * | 2016-07-21 | 2016-12-07 | 丁悦 | A kind of antibacterial parasite killing slow release agricultural fertilizer |
| CN106242838A (en) * | 2016-08-29 | 2016-12-21 | 贵阳开磷化肥有限公司 | A kind of Fructus Citri tangerinae Controlled Release Fertilizer and preparation method thereof |
| CN106380285A (en) * | 2016-08-29 | 2017-02-08 | 贵阳开磷化肥有限公司 | Pear controlled-release fertilizer and preparation method thereof |
| CN106748331A (en) * | 2017-03-10 | 2017-05-31 | 四川好时吉化工有限公司 | For the sustained-controll-release fertiliser of eggplant |
| CN108440158A (en) * | 2018-06-06 | 2018-08-24 | 中国科学院沈阳应用生态研究所 | A kind of anti-loss type bundled slow-releasing fertilizer of nutrient and preparation method thereof |
| CN112898084A (en) * | 2019-11-19 | 2021-06-04 | 湖北省农业科学院植保土肥研究所 | Controlled-release blended fertilizer for rice shrimp mode and preparation method and application thereof |
| CN115784796A (en) * | 2022-12-27 | 2023-03-14 | 辽宁津大肥业有限公司 | Preparation method of chelated fertilizer for improving chelating capacity of trace elements of compound fertilizer |
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| EP1323692A2 (en) * | 1998-07-02 | 2003-07-02 | Agroqualita S.r.l. | Microgranular fertiliser composition for sowing and transplanting |
| CN1800114A (en) * | 2006-01-19 | 2006-07-12 | 北京海依飞科技有限公司 | Rhizosphere friendly fertilizer and its production method |
| CN103159530A (en) * | 2013-04-16 | 2013-06-19 | 重庆港宸农资有限公司 | Special slow-release compound fertilizer for hot peppers and preparation method of special slow-release compound fertilizer |
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| CN104529623A (en) * | 2014-12-10 | 2015-04-22 | 中化化肥有限公司成都研发中心 | Agricultural ammonium polyphosphate capable of being chelated with medium trace elements and preparation method of agricultural ammonium polyphosphate |
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Patent Citations (6)
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| EP1323692A2 (en) * | 1998-07-02 | 2003-07-02 | Agroqualita S.r.l. | Microgranular fertiliser composition for sowing and transplanting |
| CN1800114A (en) * | 2006-01-19 | 2006-07-12 | 北京海依飞科技有限公司 | Rhizosphere friendly fertilizer and its production method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187519A (en) * | 2016-07-21 | 2016-12-07 | 丁悦 | A kind of antibacterial parasite killing slow release agricultural fertilizer |
| CN106242838A (en) * | 2016-08-29 | 2016-12-21 | 贵阳开磷化肥有限公司 | A kind of Fructus Citri tangerinae Controlled Release Fertilizer and preparation method thereof |
| CN106380285A (en) * | 2016-08-29 | 2017-02-08 | 贵阳开磷化肥有限公司 | Pear controlled-release fertilizer and preparation method thereof |
| CN106748331A (en) * | 2017-03-10 | 2017-05-31 | 四川好时吉化工有限公司 | For the sustained-controll-release fertiliser of eggplant |
| CN108440158A (en) * | 2018-06-06 | 2018-08-24 | 中国科学院沈阳应用生态研究所 | A kind of anti-loss type bundled slow-releasing fertilizer of nutrient and preparation method thereof |
| CN112898084A (en) * | 2019-11-19 | 2021-06-04 | 湖北省农业科学院植保土肥研究所 | Controlled-release blended fertilizer for rice shrimp mode and preparation method and application thereof |
| CN115784796A (en) * | 2022-12-27 | 2023-03-14 | 辽宁津大肥业有限公司 | Preparation method of chelated fertilizer for improving chelating capacity of trace elements of compound fertilizer |
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Application publication date: 20160316 |