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Long-acting water-soluble fertilizer and preparation method thereof

A water-soluble fertilizer, long-term technology, applied in the direction of nitrogen fertilizer, potash fertilizer, phosphate fertilizer, etc., can solve the problems of easy residual pollution, high price, insufficient nitrification inhibitor effect, etc.

Active Publication Date: 2021-04-09
SHENZHEN BATIAN ECOTYPIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a long-acting water-soluble fertilizer for the problems of insufficient effect of nitrification inhibitors in the prior art, easy residual pollution, and high price.

Method used

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  • Long-acting water-soluble fertilizer and preparation method thereof
  • Long-acting water-soluble fertilizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] This embodiment is used to illustrate the long-acting water-soluble fertilizer disclosed by the present invention.

[0026] With the ammonium phosphate of 48 weight parts, the ammonium sulfate of 46 weight parts, the potassium sulfate of 56 weight parts, the M-CD (the dimer that contains the cyanamide of 2 weight parts, the dimer of 1 weight part) as nitrification inhibitor of 2 weight parts Calcium nitrate and 0.5 parts by weight of calcium oxide) were added to 50 parts by weight of urea melt, and after uniform mixing, the mixed slurry was subjected to drum granulation to obtain the long-acting water-soluble fertilizer S1.

Embodiment 2

[0028] This embodiment is used to illustrate the long-acting water-soluble fertilizer disclosed by the present invention.

[0029] With the ammonium phosphate of 48 weight parts, the ammonium sulfate of 46 weight parts, the potassium sulfate of 56 weight parts, the M-CD (the dimer that contains the cyanamide of 2 weight parts, the dimer of 1 weight part) as nitrification inhibitor of 2 weight parts Calcium nitrate and 1 part by weight of calcium oxide) were added to 50 parts by weight of urea melt, and after uniform mixing, the mixed slurry was subjected to drum granulation to obtain the long-acting water-soluble fertilizer S2.

Embodiment 3

[0031] This embodiment is used to illustrate the long-acting water-soluble fertilizer disclosed by the present invention.

[0032] With the ammonium phosphate of 48 weight parts, the ammonium sulfate of 46 weight parts, the potassium sulfate of 56 weight parts, the M-CD (the dimer that contains the cyanamide of 3 weight parts, 2 weight parts Calcium nitrate and 0.5 parts by weight of calcium oxide) were added to 50 parts by weight of urea melt, and after uniform mixing, the mixed slurry was subjected to drum granulation to obtain the long-acting water-soluble fertilizer S3.

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Abstract

In order to overcome the problems of insufficient effect, easy residual pollution and high price of a nitrification inhibitor in the prior art, the invention provides a long-acting water-soluble fertilizer which comprises urea, ammonium phosphate, potassium sulfate, ammonium sulfate and a nitrification inhibitor, wherein the nitrification inhibitor comprises the following components in parts by weight: 1-3 parts of a polymer of water-soluble cyanamide, 1-2 parts of a water-soluble calcium salt and 0.5-1 part of calcium oxide. Meanwhile, the invention also provides a preparation method of the long-acting water-soluble fertilizer. The provided long-acting water-soluble fertilizer can effectively inhibit the action of nitrifying bacteria, inhibit volatilization of ammonia, delay conversion from soil ammonium nitrogen to nitrate nitrogen and reduce leaching loss of soil nitrate nitrogen. When the fertilizer is used in areas with much rainwater and popular irrigation facilities, the fertilizer utilization rate can be improved, crop nutrient absorption and conversion are promoted, the fertilization frequency is reduced, agricultural water is saved, the labor cost is reduced, and the economic benefits are improved.

Description

technical field [0001] The invention relates to a long-acting water-soluble fertilizer and a preparation method thereof. Background technique [0002] Water-soluble fertilizers are liquid or solid water-soluble fertilizers that use nitrogen, phosphorus, and potassium as the main components in a certain proportion of scientific proportions, and add appropriate amounts of medium and trace elements. Compared with traditional compound fertilizers, water-soluble fertilizers can be completely dissolved in water, easily absorbed and utilized by roots, and have a relatively high nutrient utilization rate. The effective absorption rate of fertilizers can reach 80%-90%, which is much higher than 30% of ordinary compound fertilizers. -40%. In addition, the method of fertilization is simple, and fertilization and irrigation (spray and drip irrigation) can be combined and carried out simultaneously, which not only reduces agricultural water use, but also reduces labor. It has become the...

Claims

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Application Information

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IPC IPC(8): C05G3/40C05G3/90
CPCC05G3/40C05G3/90C05B7/00C05C3/00C05C9/00C05D1/02C05D3/02Y02P60/21
Inventor 史海莉杨勇邓宝元杨凤英吴冬李峰
Owner SHENZHEN BATIAN ECOTYPIC ENG
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