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Controlled release compound fertilizer and preparation method thereof

A technology of compound fertilizer and mixed fertilizer, which is applied in the direction of fertilizer mixture, fertilization device, application, etc., can solve the problems of not fully satisfying the law of crop fertilizer demand, slowing down the release speed of fertilizer, and high production cost, so as to reduce the overall amount of fertilization and prolong the production time. The effect of fertilizer efficiency and low cost

Active Publication Date: 2014-07-30
YUNNAN YUNYE FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing slow-release fertilizers or controlled-release fertilizers use coating technology to slow down the release of fertilizers, so as to slow down the release rate of fertilizers. This kind of fertilizers can only release fertilizers according to their unique speeds, but cannot fully meet the fertilizer requirements of crops. Moreover, the production cost is high, it is difficult to be accepted by the majority of farmers, and it is not conducive to large-scale promotion and application. The research and development of a more environmentally friendly, more effective, more economical and more practical loss control technology has become an urgent problem in agricultural production.
[0003] In addition, China's current agricultural non-point source pollution problem is relatively serious.

Method used

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  • Controlled release compound fertilizer and preparation method thereof
  • Controlled release compound fertilizer and preparation method thereof
  • Controlled release compound fertilizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] The loss-controlling fertilizer additive in this embodiment is: according to parts by weight, 39.75 parts of bentonite, 39.75 parts of montmorillonite and 1.00 part of polyacrylamide are evenly mixed to obtain the loss-controlling fertilizer additive;

[0030] A loss-control fertilizer includes the following raw materials in parts by weight: 4.5 parts of monoammonium phosphate, 24.6 parts of ammonium nitrate, 1.5 parts of ammonium sulfate, 22.0 parts of potassium sulfate, 1.0 part of potassium chloride, 0.2 parts of borax, 0.2 parts of zinc sulfate parts, 0.2 parts of magnesium sulfate and 0.99 parts of loss-controlling fertilizer additives.

[0031] Nitrogen (N): Phosphorus (P 2 o 5 ): Potassium (K 2 O) The nutrient mass ratio is 16:4:21.

[0032] The preparation method of the loss-control type compound fertilizer of the present embodiment comprises the following steps:

[0033] Step (1): According to parts by weight, weigh the above-mentioned monoammonium phosphat...

Embodiment 2

[0036] The loss-controlling fertilizer additive of this embodiment is: according to parts by weight, 49.50 parts of bentonite, 49.50 parts of montmorillonite, 14.50 parts of polyacrylamide, 0.50 part of chitosan, 1.00 part of sodium nitrophenolate, 0.50 part of DMPP and DA -6 1.00 parts mixed evenly to obtain a loss-controlling fertilizer additive;

[0037] A loss-controlling fertilizer comprising the following raw materials in parts by weight: 35.0 parts of monoammonium phosphate, 44.6 parts of ammonium nitrate, 11.5 parts of ammonium sulfate, 47.0 parts of potassium sulfate, 9.0 parts of potassium chloride, 2.0 parts of borax, and 2.0 parts of zinc sulfate 10.0 parts of magnesium sulfate, 20.0 parts of diammonium phosphate, 40.0 parts of potassium nitrate, 38.0 parts of ammonium chloride, 15.0 parts of ammonium bicarbonate, 35.0 parts of ammonium phosphorus nitrate, 20.0 parts of urea, 20.0 parts of ordinary calcium, 15.0 parts of heavy calcium and 7.41 parts of loss-control...

Embodiment 3

[0043]The loss-controlling fertilizer additive of this embodiment is: according to parts by weight, 42.20 parts of bentonite, 45.00 parts of montmorillonite, 9.50 parts of polyacrylamide, 0.30 part of chitosan, 0.70 part of sodium nitrophenolate, 0.25 part of DMPP and DA -60.48 parts were mixed evenly to obtain a loss-controlling fertilizer additive;

[0044] A loss-control fertilizer includes the following raw materials in parts by weight: 20.0 parts of monoammonium phosphate, 40.0 parts of ammonium nitrate, 8.5 parts of ammonium sulfate, 35.0 parts of potassium sulfate, 6.0 parts of potassium chloride, 1.0 parts of borax, and 1.2 parts of zinc sulfate 5.3 parts of magnesium sulfate, 12.0 parts of diammonium phosphate, 10.0 parts of potassium nitrate, 30.0 parts of ammonium chloride, 7.0 parts of ammonium bicarbonate, 15.0 parts of ammonium nitrate, 6.0 parts of urea, 8.0 parts of general calcium, 5.0 parts of heavy calcium and 2.1 parts of loss-control fertilizer additive. ...

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Abstract

The invention relates to a controlled release compound fertilizer and a preparation method thereof and belongs to the technical field of agricultural fertilizers. The controlled release compound fertilizer comprises a controlled release fertilizer additive, wherein the weight ratio of the controlled release fertilizer additive to a fertilizer is (1-8):100; the controlled release fertilizer additive comprises the following raw materials in parts by weight: 39.75-49.50 parts of bentonite, 39.75-49.50 parts of montmorillonite, 1.00-14.50 parts of polyacrylamide, 0-0.50 part of chitosan, 0-1.00 part of compound sodium nitrophenolate, 0-0.50 part of DMPP and 0-1.00 part of DA-6. The fertilizer has the advantages of long fertilizer efficiency, good environmental friendliness, low cost and the like. Not only are nutrients in the fertilizer effectively wrapped not to run off, but also absorption of the fertilizer by crops is not affected, so that the long-acting purpose is realized, and the fertilizer is an ideal environment-friendly fertilizer.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular relates to a loss-controlling compound fertilizer and a preparation method thereof. Background technique [0002] China is a large agricultural country, and the amount of fertilizer used is also among the top in the world. However, water pollution caused by fertilizer loss is also quite serious. Controlling the loss of fertilizers is the primary issue in reducing water pollution. At present, many scientific research institutions at home and abroad are researching and developing new fertilizers that can meet the needs of crop growth and reduce nutrient loss. Existing slow-release fertilizers or controlled-release fertilizers use coating technology to slow down the release of fertilizers, so as to slow down the release rate of fertilizers. This kind of fertilizers can only release fertilizers according to their unique speeds, but cannot fully meet the fertilizer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 钟学鹏尚海丽张琪杨发祥时仓莫夏明张丽芳孙哲李洪兴
Owner YUNNAN YUNYE FERTILIZER
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