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A kind of long-acting water-soluble fertilizer and preparation method thereof

A water-soluble fertilizer, long-acting technology, applied in the direction of potassium fertilizer, nitrogen fertilizer, phosphate fertilizer, etc., can solve the problems of easy residual pollution, high price, and insufficient effect of nitrification inhibitors, and achieve the effect of reducing pollution, low cost, and excellent nitrification inhibition effect

Active Publication Date: 2022-07-05
SHENZHEN BATIAN ECOTYPIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of long-acting water-soluble fertilizer and preparation method thereof
  • A kind of long-acting water-soluble fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

Embodiment 2

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

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

Embodiment 3

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

[0032] 48 parts by weight of ammonium phosphate, 46 parts by weight of ammonium sulfate, 56 parts by weight of potassium sulfate, 2 parts by weight of M-CD (containing 3 parts by weight of cyanamide dimer, 2 parts by weight of M-CD as a nitrification inhibitor) Calcium nitrate and 0.5 parts by weight of calcium oxide) were added to 50 parts by weight of urea melt, and after mixing uniformly, the mixed slurry was drum granulated 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 nitrification inhibitors in the prior art, the present invention provides a long-acting water-soluble fertilizer, including urea, ammonium phosphate, potassium sulfate, ammonium sulfate and nitrification inhibitors; The nitrification inhibitor includes a polymer of water-soluble cyanamide, a water-soluble calcium salt and calcium oxide, and the content of the polymer of the cyanamide is 1-3 parts by weight, and the content of the water-soluble calcium salt is 1-2 parts by weight parts, and the content of calcium oxide is 0.5-1 part by weight. At the same time, the present invention also provides a preparation method of the above-mentioned long-acting water-soluble fertilizer. The long-acting water-soluble fertilizer provided by the invention can effectively inhibit the action of nitrifying bacteria, inhibit the volatilization of ammonia, delay the conversion of soil ammonium nitrogen to nitrate nitrogen, and reduce the leaching loss of soil nitrate nitrogen. Used in areas with a lot of rain and popular irrigation facilities, it can improve the utilization rate of fertilizers, promote the absorption and transformation of crop nutrients, reduce the frequency of fertilization, save agricultural water, reduce labor costs, and improve economic benefits.

Description

technical field [0001] The invention relates to a long-acting water-soluble fertilizer and a preparation method thereof. Background technique [0002] Water-soluble fertilizer is a liquid or solid water-soluble fertilizer with nitrogen, phosphorus and potassium as the main components in a scientific proportion according to a certain proportion, and adding an appropriate amount of medium and trace elements. Compared with traditional compound fertilizers, water-soluble fertilizers can be completely dissolved in water, easily absorbed and utilized by the root system, and the nutrient utilization rate is relatively high. -40%. In addition, the fertilization method is simple, and fertilization and irrigation (sprinkler and drip irrigation) can be combined and carried out synchronously, which not only reduces agricultural water consumption, but also reduces the amount of labor. [0003] Water-soluble fertilizers are fast-acting, and the clay layer of the soil cannot absorb nitra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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