CN103708915A - Slow release fertilizer and preparation method thereof - Google Patents
Slow release fertilizer and preparation method thereof Download PDFInfo
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- CN103708915A CN103708915A CN201310658172.3A CN201310658172A CN103708915A CN 103708915 A CN103708915 A CN 103708915A CN 201310658172 A CN201310658172 A CN 201310658172A CN 103708915 A CN103708915 A CN 103708915A
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- slow release
- fertilizer
- attapulgite
- release fertilizer
- urea
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Abstract
The invention discloses a slow release fertilizer. The slow release fertilizer includes urea, ammonium carbonate and attapulgite, and is characterized in that the urea and ammonium carbonate are filled in micro-nano pores of the attapulgite. A fertilizer containing urea and ammonium carbonate 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 the defect that overcomes prior art, 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, volatile salt and attapulgite, and its feature is, described urea and volatile salt are filled in the micro-nano duct of attapulgite.
Further, the mass ratio of described urea and volatile salt is 1:(1～0.5).
The preparation method of above-mentioned slow release fertilizer, by the fertilizer water dissolution that comprises urea and volatile salt, 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 fertilizer water dissolution, after fully mixing with attapulgite again, pass through wicking action, the aqueous solution of fertilizer can be adsorbed the micro-nano duct that enters attapulgite completely, after spraying is dry, water in micro-nano duct is evaporated, and fertilizer is retained, thereby realize fertilizer, is 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 element reach the effect of slow release, only by attapulgite particle and urea granules or volatile salt particle 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, volatile salt and attapulgite, and wherein, urea and volatile salt are filled in the micro-nano duct of attapulgite.Preparation process is as follows:
First, by 100kg urea and 100kg volatile salt 150kg 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 50kg volatile salt 100kg water dissolution.
embodiment 3
Be different from embodiment 1, by 100kg urea and 70kg volatile salt 100kg water dissolution.
The present invention also can add its water soluble fertilizer, as Repone K in fertilizer solution.Also slow release fertilizer can be mixed to use with other potash fertilizer, phosphate fertilizer.
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, volatile salt and attapulgite, it is characterized in that, described urea and volatile salt 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 volatile salt is 1:(1～0.5).
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 volatile salt, 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 |
|---|---|---|---|
| CN201310658172.3A CN103708915A (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 |
|---|---|---|---|
| CN201310658172.3A CN103708915A (en) | 2013-12-09 | 2013-12-09 | Slow release fertilizer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103708915A true CN103708915A (en) | 2014-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310658172.3A Pending CN103708915A (en) | 2013-12-09 | 2013-12-09 | Slow release fertilizer and preparation method thereof |
Country Status (1)
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| CN (1) | CN103708915A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130682A (en) * | 2015-09-25 | 2015-12-09 | 中南林业科技大学 | Method for preparing composite fertilizer by virtue of wood fiber ethanol fermentation residue |
Citations (5)
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|---|---|---|---|---|
| US4617048A (en) * | 1985-08-26 | 1986-10-14 | Tennessee Valley Authority | Sodium bentonite-UAN suspension without chemical dispersants |
| CN101041606A (en) * | 2007-03-11 | 2007-09-26 | 中国科学院等离子体物理研究所 | Loss control method for low cost environment-friendly type nitrogenous fertilizer and loss control fertilizer |
| 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 |
| CN101353285A (en) * | 2008-08-29 | 2009-01-28 | 薛立成 | Natural multifunctional mineral compound fertilizer |
| CN101353280A (en) * | 2008-08-29 | 2009-01-28 | 薛立成 | Mineral urea |
-
2013
- 2013-12-09 CN CN201310658172.3A patent/CN103708915A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617048A (en) * | 1985-08-26 | 1986-10-14 | Tennessee Valley Authority | Sodium bentonite-UAN suspension without chemical dispersants |
| CN101041606A (en) * | 2007-03-11 | 2007-09-26 | 中国科学院等离子体物理研究所 | Loss control method for low cost environment-friendly type nitrogenous fertilizer and loss control fertilizer |
| 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 |
| CN101353285A (en) * | 2008-08-29 | 2009-01-28 | 薛立成 | Natural multifunctional mineral compound fertilizer |
| CN101353280A (en) * | 2008-08-29 | 2009-01-28 | 薛立成 | Mineral urea |
Non-Patent Citations (2)
| Title |
|---|
| 刘步林: "《农药剂型加工技术》", 31 December 1998, 化学工业出版社 * |
| 邬国良，等: "《植保机械与施药技术简明教程》", 31 December 2008, 西北农林科技大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130682A (en) * | 2015-09-25 | 2015-12-09 | 中南林业科技大学 | Method for preparing composite fertilizer by virtue of wood fiber ethanol fermentation residue |
| CN105130682B (en) * | 2015-09-25 | 2018-11-23 | 中南林业科技大学 | A method of compound fertilizer is prepared by wood fibre alcohol fermentation residue |
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Application publication date: 20140409 |