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Special controlled-release fertilizer for winter wheat and production method of fertilizer

A production method and a technology for controlled-release fertilizer, which are applied in the field of fertilizers, can solve the problems of reduced drought resistance and water retention effect of coating materials, low nitrogen fertilizer retention and utilization efficiency, affecting the effect of coating materials, etc., so as to achieve ideal coating effect and nitrogen fertilizer. The effect of improving the utilization rate and saving labor

Inactive Publication Date: 2014-09-10
刘凯
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unreasonable ratio of different types of coating materials and nitrogen fertilizer varieties, the effect of coating materials on drought resistance and water retention is reduced, and the efficiency of nitrogen fertilizer maintenance and utilization is not high, which affects the effect of coating materials to a certain extent.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Proportion (kg): Urea 580, Monoammonium Phosphate 160, Potassium Chloride 180, Premium Root 35, Bentonite 50, Magnesium Oxide 50, Zinc Sulfate 5, Ferrous Sulfate 2, Nickel Sulfate 2, Borax 1, Lecithin 18. Potassium polyacrylate 10 and cottonseed oil 32.

[0026] The main raw material content: monoammonium phosphate (N11~P 2 O 5 44), potassium chloride (K 2 O≥60%), urea (N≥46%), the purity of lecithin / potassium polyacrylate is more than 90%.

[0027] (1) Measuring, mixing and crushing

[0028] Firstly, urea and DMPP are mixed and pulverized; then monoammonium phosphate, potassium chloride, special root, bentonite, magnesium oxide, zinc sulfate, ferrous sulfate, nickel sulfate and borax are added, and solid materials are formed after metering and mixing , After crushing, it enters the drum steam granulator to granulate;

[0029] (2) Granulation

[0030] The granulation time is 15 minutes, the drum steam granulation is φ2.2×7m, and the vapor pressure is 1.2 atmospheres.

[0031] (3...

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Abstract

The invention discloses special controlled-release fertilizer for winter wheat and a production method of the fertilizer. The method is characterized by comprising the steps: granulating urea, monoammonium phosphate, potassium chloride, excellent-root fertilizer, bentonite, magnesium oxide, zinc sulfide, ferrous sulfate, nickel sulfate, borax and DMPP to form inner layer particles; coating the particles by utilizing lecithin / potassium polyacrylate on the outer layer. By adopting the production method, the effective period of the nitrogen fertilizer is prolonged from 15 days to 100 days; moreover, the fertilizer is centralized to be released in the large flare period of the wheat, so that the effective period of the nitrogen fertilizer is greatly prolonged, and the utilization rate of the nitrogen fertilizer for the winter wheat is greatly increased.

Description

Technical field [0001] The invention relates to a special controlled-release fertilizer for winter wheat and a production method thereof, and belongs to the technical field of fertilizers. Background technique [0002] The use of polymer materials and other coating agents to maintain nitrogen fertilizer, and control conversion and slow release are important directions for improving nitrogen fertilizer utilization efficiency. In the practice of agricultural production, coating materials and nitrogen fertilizers are often used in combination. However, due to the unreasonable ratio of different types of coating materials and nitrogen fertilizer varieties, the effect of coating materials in drought resistance and water retention is reduced, and the efficiency of nitrogen fertilizer maintenance and utilization is not high, which affects the effect of coating materials to a certain extent. Reasonable application of coating materials can improve soil physical properties, promote seed g...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/08C05G5/00C05G3/90
Inventor 刘凯
Owner 刘凯