Weak-acid slow controlled-release fertilizer

A controlled-release fertilizer and weakly acidic technology, which is applied in the direction of fertilizer mixture, fertilization device, agricultural gas emission reduction, etc., can solve the problems that fertilizers cannot meet, achieve high nutrient utilization rate, good physical properties, and reduce environmental pollution.

Active Publication Date: 2014-04-30
SHENYANG SIXIONGDI FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of industrial fertilizers, people's requirements for fertilizers are also increasing, and the current fertilizers cannot meet people's requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A weakly acidic slow-release fertilizer, made of the following components by weight: 150 parts of potassium chloride, 250 parts of monoammonium phosphate, 370 parts of urea, 120 parts of ammonium chloride, 20 parts of sulfuric acid, 2 parts of urease inhibitor, 8 parts of urea-formaldehyde, 20 parts of synthetic ammonium, 2 parts of nitrification inhibitor, 4 parts of ammonia stabilizer, 0.3 part of phosphorus activator, 0.8 part of protective agent, 0.3 part of zinc sulfate heptahydrate, 0.3 part of water-soluble silicon, 1.5 parts of amino acid.

[0029] According to the national standard "Slow-release fertilizer" (GB / T 23348-2009), the slow-release fertilizer should be soaked in still water at 25°C for 24 hours, with an initial nutrient release rate of less than 15%, and a 28-day cumulative nutrient release rate of less than 80%. It can be seen from Table 1 that the product of the present invention meets the national standard.

[0030] Table 1 Comparison table of pro...

Embodiment 2

[0033] A weakly acidic slow-release fertilizer, made of the following ingredients by weight: 200 parts of potassium chloride, 200 parts of monoammonium phosphate, 400 parts of urea, 160 parts of ammonium chloride, 10 parts of sulfuric acid, 8 parts of urease inhibitor, 2 parts of urea-formaldehyde, 30 parts of synthetic ammonium, 8 parts of nitrification inhibitor, 1 part of ammonia stabilizer, 0.8 part of phosphorus activator, 0.38 part of protective agent, 0.8 part of zinc sulfate heptahydrate, 0.8 part of water-soluble silicon, and 0.8 part of organic matter.

[0034] According to the national standard "Slow-release fertilizer" (GB / T 23348-2009), the slow-release fertilizer should be soaked in still water at 25°C for 24 hours, with an initial nutrient release rate of less than 15%, and a 28-day cumulative nutrient release rate of less than 80%. It can be seen from Table 1 that the product of the present invention meets the national standard.

[0035] Table 1 Comparison tabl...

Embodiment 3

[0038] A weakly acidic slow-release fertilizer, made of the following components by weight: 185 parts of potassium chloride, 225 parts of monoammonium phosphate, 390 parts of urea, 140 parts of ammonium chloride, 15 parts of sulfuric acid, 5 parts of urease inhibitor, 5 parts of urea-formaldehyde, 25 parts of synthetic ammonium, 5 parts of nitrification inhibitor, 2 parts of ammonia stabilizer, 0.5 part of phosphorus activator, 0.5 part of protective agent, 0.5 part of zinc sulfate heptahydrate, 0.5 part of water-soluble silicon, 1 part of beneficial bacteria .

[0039] According to the national standard "Slow-release fertilizer" (GB / T 23348-2009), the slow-release fertilizer should be soaked in still water at 25°C for 24 hours, with an initial nutrient release rate of less than 15%, and a 28-day cumulative nutrient release rate of less than 80%. It can be seen from Table 1 that the product of the present invention meets the national standard.

[0040] Table 1 Comparison tabl...

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PUM

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Abstract

The invention discloses a weak-acid slow controlled-release fertilizer which is prepared from the following ingredients in parts by weight: 150-200 parts of potassium chloride, 200-250 parts of monoammonium phosphate, 370-400 parts of urea, 120-160 parts of ammonium chloride, 10-20 parts of sulfuric acid, 2-8 parts of a urease inhibitor, 2-8 parts of urea formaldehyde, 20-30 parts of synthetic ammonium, 2-8 parts of a nitrification inhibitor, 1-4 parts of an ammonium stabilizer, 0.3-0.8 part of a phosphorus activator, 0.3-0.8 part of a protective agent, 0.3-0.8 part of heptahydrate, 0.3-0.8 part of water-soluble silicon and 0.8-1.5 parts of an additive. The fertilizer has the advantages as follows: the fertilizer efficiency period is long, the nutrient utilization rate is high, the physical properties are good, and the environmental pollution is reduced greatly.

Description

technical field [0001] The invention relates to the field of chemical fertilizers, and in particular provides a weakly acidic slow-release fertilizer. Background technique [0002] As the main source of plant nutrients and improving soil properties, fertilizer is of great significance to promote plant growth and increase the yield of food, fruits and vegetables. The current fertilizers mainly include chemical fertilizers, organic fertilizers and biological fertilizers. With the development of industrial fertilizers, people's requirements for fertilizers are also increasing, and the current fertilizers cannot meet people's requirements. [0003] Therefore, how to improve existing fertilizers has become an urgent problem to be solved. Contents of the invention [0004] In view of this, the purpose of the present invention is to provide a weakly acidic slow-controlled release fertilizer, characterized in that: the fertilizer is made of the following components by weight rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
CPCY02P60/21
Inventor 李勇
Owner SHENYANG SIXIONGDI FERTILIZER
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