Release control fertilizer and method for producing same

A production process and fertilizer technology, which is applied in the field of controlled-efficiency fertilizers combined with nitrification inhibitors and its production process, can solve the problems of changes in the application effect of nitrification inhibitors, reduction and loss of nitrification inhibition effects, etc., and achieve a reduction in fixed ratios , to achieve effective control and improve the effect of utilization

Inactive Publication Date: 2005-09-14
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, nitrification inhibitors are easy to degrade or fix in the soil, reducing or losing the nitrification inhibitory eff

Method used

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  • Release control fertilizer and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The compound fertilizer containing dicyandiamide is used as the fertilizer core, and the environment-friendly material used for the coating is: acrylic resin RS100.

[0023] The production process of the compound fertilizer core containing dicyandiamide is as follows: 25 parts of crushed urea, 30 parts of monoammonium phosphate, 4 parts of ammonium bicarbonate, 25 parts of potassium sulfate, 14.7 parts of bentonite and 0.3 parts of After the dicyandiamide is fully mixed, it is prepared into a granular compound fertilizer with a particle size of 2.5-4.0mm through processes such as granulation, drying, screening and cooling.

[0024] Coating process: adopt fluidized bed spray coating method, the specific operation is: dissolve 100 parts of acrylic resin RS100 used for coating in 1500 parts of ethanol solvent, wherein the amount of acrylic resin RS100 is 8% of the weight of the fertilizer core; Add 20 parts of inorganic membrane conditioner talcum powder to the ethanol sol...

Embodiment 2

[0029] The compound fertilizer containing 3,4-dimethylpyrazole phosphate is used as the fertilizer core, and the environment-friendly material used for the coating is a blend of acrylic resin RS100 and ethyl cellulose.

[0030] The production process of the compound fertilizer core containing 3,4-dimethylpyrazole phosphate is as follows: using disc granulation equipment, 28 parts of crushed urea, 25 parts of monoammonium phosphate, 3 parts of ammonium bicarbonate, and 30 parts of potassium sulfate , 13.2 parts of bentonite and 0.8 parts of 3,4-dimethylpyrazole phosphate are fully mixed, and then prepared into granular compound fertilizer with a particle size of 2.5-4.0 mm through processes such as granulation, drying, screening and cooling.

[0031] Coating process: fluidized bed spray coating method is adopted, the specific operation is: dissolve 50 parts of acrylic resin RS100 and 50 parts of ethyl cellulose for coating in 1000 parts of ethanol solvent, of which acrylic resin...

Embodiment 3

[0034] The compound fertilizer containing dicyandiamide is used as the fertilizer core, and the environmentally friendly material used for the coating is a blend of acrylic resin RS100 and ethyl cellulose.

[0035] The production process of the compound fertilizer core containing dicyandiamide is as follows: 24 parts of crushed urea, 32 parts of monoammonium phosphate, 5 parts of ammonium bicarbonate, 28 parts of potassium sulfate, 9.8 parts of bentonite and 1.2 parts of After the dicyandiamide is fully mixed, it is prepared into a granular compound fertilizer with a particle size of 2.5-4.0mm through processes such as granulation, drying, screening and cooling.

[0036] Coating process: adopt fluidized bed spray coating method, the specific operation is: dissolve 70 parts of acrylic resin RS100 and 30 parts of ethyl cellulose for coating in 1200 parts of ethanol solvent, of which acrylic resin RS100 and ethyl cellulose The total amount of the element is 15% of the weight of t...

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Abstract

This invention relates to controlled release fertilizer, to be specific, it is a control efficiency fertilizer and its manufacturing technique. The control efficiency fertilizer is composed by capsule and fertilizer core, the core is nitrogen compound fertilizer with nitrification inhibitor, the capsule is acrylic resin or compound of acrylic resin and ethyl cellulose. The core is produced by blending comminution granulation; fluidized bed spray painting is used on capsule technique. Acrylic resin or compound of acrylic resin and ethyl cellulose is dissolved in ethanol solution. Inorganic membrane amendment and plasticizer are added to the solution, then fluidized state capsule surface is sprayed coated to form smoothing, continuous, uniform capsule. It can control nutrition release and transformation of fertilizer nitrogen efficiently, greatly evaluate the availability of azophoska, and the manufacturing cost is below high molecular polymer capsule compounding fertilizer which has equal fertilizer efficiency.

Description

technical field [0001] The invention relates to a controlled-release fertilizer, in particular to a controlled-efficiency fertilizer combined with a nitrification inhibitor and a production process thereof. Background technique [0002] Due to factors such as volatilization, leaching and soil fixation, the utilization rate of traditional chemical fertilizers, especially nitrogen fertilizers, has been low. The seasonal utilization rate of nitrogen fertilizer is only 30% to 40%, and the seasonal utilization rate of phosphorus fertilizer is only 10% to 20%. left and right; trace elements are lower, and it is difficult to fully exert their effects when applied in the current season. The low utilization rate of fertilizers not only has poor effect on increasing crop yield and quality, but also has low economic benefits, and can also cause serious ecological and environmental problems such as air pollution, soil non-point source pollution, groundwater pollution, and water eutrophi...

Claims

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Application Information

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IPC IPC(8): C05G3/90
CPCY02P60/21
Inventor 武志杰张海军陈利军
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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