CN103708916A - Slow release fertilizer and preparation method thereof - Google Patents
Slow release fertilizer and preparation method thereof Download PDFInfo
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- CN103708916A CN103708916A CN201310658181.2A CN201310658181A CN103708916A CN 103708916 A CN103708916 A CN 103708916A CN 201310658181 A CN201310658181 A CN 201310658181A CN 103708916 A CN103708916 A CN 103708916A
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- slow release
- attapulgite
- release fertilizer
- urea
- fertilizer
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Abstract
The invention discloses a slow release fertilizer. The slow release fertilizer includes urea, diammonium phosphate and attapulgite, and is characterized in that the urea and diammonium phosphate are filled in micro-nano pores of the attapulgite. A fertilizer containing urea and diammonium phosphate is dissolved in water, and then sprayed on the attapulgite; and the mixture is stirred for mixing, granulated and dried to obtain the slow release fertilizer. Compared with the prior art, the slow release fertilizer provided by the invention can reduce nitrogen loss by 70%-90%, and does not require other auxiliary sustained-release or controlled-release technology, such as cladding oil.
Description
Technical field
The present invention relates to a kind of slow release fertilizer and preparation method thereof.
Background technology
Nitrogen is the requisite nutritive element of plant-growth, and loss of nitrogenous fertilizer need to solve a problem when to be nitrogen manure use always, existing generally nitrogenous fertilizer mixing with sustained release dosage or controlled release agent to reaching the problem of control loss of nitrogenous fertilizer.
Attapulgite/stone is a kind of mineral with micro-nano duct; there are reports mixes the fertilizer such as attapulgite/stone and nitrogenous fertilizer to prepare and has the fertilizer that slowly-releasing or control are lost; yet this class fertilizer substantially just mixes attapulgite/stone granulate and nitrogenous fertilizer particle to obtain; because nitrogenous fertilizer particle has macro-size (being generally grade); cannot enter in the micro-nano duct of attapulgite/stone at all; therefore; existing attapulgite/the stone that utilizes is very limited to the slowly-releasing of nitrogenous fertilizer or control inefficacy fruit, still needs to be aided with other slowly-releasing or control mistake technology.
Summary of the invention
The technical problem to be solved in the present invention is to overcome existing defect, and a kind of slow release fertilizer and preparation method thereof is provided.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A slow release fertilizer, comprises urea, Secondary ammonium phosphate and attapulgite, and its feature is, described urea and Secondary ammonium phosphate are filled in the micro-nano duct of attapulgite.
Further, the mass ratio of described urea and Secondary ammonium phosphate is 1:(0.5～0.01).
The preparation method of above-mentioned slow release fertilizer, by the fertilizer water dissolution that comprises urea and Secondary ammonium phosphate, then is sprayed on attapulgite, is uniformly mixed, and granulation, spraying is dry, obtains slow release fertilizer.
Because attapulgite is a kind of mineral of high-specific surface area, there is abundant micro-nano duct, therefore, the present invention is unlike the prior art, first by urea and Secondary ammonium phosphate water dissolution, after fully mixing with attapulgite again, pass through wicking action, the aqueous solution of urea and Secondary ammonium phosphate can be adsorbed the micro-nano duct that enters attapulgite completely, after spraying is dry, water in micro-nano duct is evaporated, urea and Secondary ammonium phosphate are retained, thereby realize urea and Secondary ammonium phosphate and be filled in the object (rather than outside attapulgite particle surface) in the micro-nano duct of attapulgite.The strong adsorptivity in micro-nano duct, can make nitrogen reach the effect of slow release, and only by attapulgite particle and urea granules mixed phase ratio, nitrogen loss can reduce 70%～90% with tradition, and without adopting other auxiliary slowly-releasing or control mistake technology, as coated oil.
Embodiment
Below in conjunction with the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
embodiment 1
A slow release fertilizer, comprises urea, Secondary ammonium phosphate and attapulgite, and wherein, urea and Secondary ammonium phosphate are filled in the micro-nano duct of attapulgite.Preparation process is as follows:
First, by 100kg urea and 50kg Secondary ammonium phosphate 120kg water dissolution, be made into fertilizer solution, then it is upper that fertilizer solution is sprayed to attapulgite (particle diameter 10～50 μ m), is uniformly mixed, until that hand is pinched is agglomerating, however granulation, spraying is dry, obtains slow release fertilizer.
embodiment 2
Be different from embodiment 1, by 100kg urea and 20kg Secondary ammonium phosphate 100kg water dissolution.
embodiment 3
Be different from embodiment 1, by 100kg urea and 1kg Secondary ammonium phosphate 100kg water dissolution.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a slow release fertilizer, comprises urea, Secondary ammonium phosphate and attapulgite, it is characterized in that, described urea and Secondary ammonium phosphate are filled in the micro-nano duct of attapulgite.
2. slow release fertilizer according to claim 1, is characterized in that, the mass ratio of described urea and Secondary ammonium phosphate is 1:(0.5～0.01).
3. claim 1 is stated the preparation method of slow release fertilizer, it is characterized in that, by the fertilizer water dissolution that comprises urea and Secondary ammonium phosphate, then is sprayed on attapulgite, be uniformly mixed, and granulation, spraying is dry, obtains slow release fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310658181.2A CN103708916A (en) | 2013-12-09 | 2013-12-09 | Slow release fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310658181.2A CN103708916A (en) | 2013-12-09 | 2013-12-09 | Slow release fertilizer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN103708916A true CN103708916A (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310658181.2A Pending CN103708916A (en) | 2013-12-09 | 2013-12-09 | Slow release fertilizer and preparation method thereof |
Country Status (1)
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| CN (1) | CN103708916A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110511759A (en) * | 2019-08-21 | 2019-11-29 | 上海市农业科学院 | A kind of application of mineral powder soil conditioner and its resistance control Cd uptake and nitrogen loss |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2362099A1 (en) * | 1976-08-18 | 1978-03-17 | Charbonnages Ste Chimique | Stable fertiliser suspensions - of di:ammonium phosphate, phosphoric acid and attapulgite |
| CN1699507A (en) * | 2004-05-21 | 2005-11-23 | 中国科学院兰州化学物理研究所 | Nutrient-supplying agent for improving high saline soil |
| WO2007064464A2 (en) * | 2005-11-30 | 2007-06-07 | Basf Catalysts Llc | Addition of gelling grade clays to direct applied nitrogen solutions to reduce nitrogen loss |
| CN101314552A (en) * | 2007-05-29 | 2008-12-03 | 中国科学院等离子体物理研究所 | Low cost environment-friendly type composite sustained-release fertilizer |
| CN101353278A (en) * | 2007-07-28 | 2009-01-28 | 中国科学院等离子体物理研究所 | Nutrient field planting compound fertilizer and preparation thereof |
| CN101353285A (en) * | 2008-08-29 | 2009-01-28 | 薛立成 | Natural multifunctional mineral compound fertilizer |
| CN102531759A (en) * | 2010-12-13 | 2012-07-04 | 王海炜 | Slow-release composite fertilizer |
-
2013
- 2013-12-09 CN CN201310658181.2A patent/CN103708916A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2362099A1 (en) * | 1976-08-18 | 1978-03-17 | Charbonnages Ste Chimique | Stable fertiliser suspensions - of di:ammonium phosphate, phosphoric acid and attapulgite |
| CN1699507A (en) * | 2004-05-21 | 2005-11-23 | 中国科学院兰州化学物理研究所 | Nutrient-supplying agent for improving high saline soil |
| WO2007064464A2 (en) * | 2005-11-30 | 2007-06-07 | Basf Catalysts Llc | Addition of gelling grade clays to direct applied nitrogen solutions to reduce nitrogen loss |
| CN101314552A (en) * | 2007-05-29 | 2008-12-03 | 中国科学院等离子体物理研究所 | Low cost environment-friendly type composite sustained-release fertilizer |
| CN101353278A (en) * | 2007-07-28 | 2009-01-28 | 中国科学院等离子体物理研究所 | Nutrient field planting compound fertilizer and preparation thereof |
| CN101353285A (en) * | 2008-08-29 | 2009-01-28 | 薛立成 | Natural multifunctional mineral compound fertilizer |
| CN102531759A (en) * | 2010-12-13 | 2012-07-04 | 王海炜 | Slow-release composite fertilizer |
Non-Patent Citations (4)
| Title |
|---|
| 刘步林: "《农药剂型加工技术第2版》", 31 December 1998 * |
| 张保民 等: "《农药加工技术》", 31 December 1996 * |
| 袁会珠: "《农药使用技术指南》", 31 December 2004 * |
| 邬国良 等: "《植保机械与施药技术简明教程》", 31 December 2009 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110511759A (en) * | 2019-08-21 | 2019-11-29 | 上海市农业科学院 | A kind of application of mineral powder soil conditioner and its resistance control Cd uptake and nitrogen loss |
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Application publication date: 20140409 |
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