New technique of capsule for controlled release fertilizer

A new technology, controlled-release fertilizer technology, applied in the direction of fertilizer form, fertilization device, fertilizer mixture, etc., can solve the problems of unbalanced nutrient supply, too fast release, and unsatisfactory release of crops, so as to improve the effect of release control and degradation The performance and production increase effect are obvious

Inactive Publication Date: 2007-05-09
HUADI BIOLOGICAL PRODS DEZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a new type of granular compound fertilizer coating process, the purpose of which is to solve the problem of unbalanced nutrient supply of crops due to the rapid release or unsatisfactory release of the existing coated controlled-release fertilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Take 100kg of sulfur-coated compound fertilizer samples, and then slowly add 1-1.5kg of vegetable oil dicyclopentadiene and glyceride copolymer to the surface of the sulfur-coated fertilizer particles. After about 5 minutes, it is solidified into a film, then cooled and packaged, and the controlled release time is about 30 days.

Embodiment 2

[0010] Get 100kg of sulfur-coated compound fertilizer samples by the same steps as in Example 1, then mix 3-5kg of vegetable oil dicyclopentadiene and glyceride copolymer with 0.2-0.3kg of rubber powder and slowly coat the fertilizer granules. It solidified into a film in about 6 minutes and then cooled and packaged, and the controlled release time was about 120 days.

Embodiment 3

[0012] Take 100kg of sulfur-coated compound fertilizer samples simultaneously as in Example 1, and then uniformly coat 4-6kg of vegetable oil dicyclopentadiene and glyceride copolymer and 0.2-0.3kg of rubber powder mixture on the fertilizer granules. It solidified into a film in about 8 minutes and then cooled and packaged, and the controlled release time was about 180 days.

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PUM

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Abstract

This invention relates to a novel process for coating controlled-release fertilizer. In the process, dicyclopentadiene / glyceride copolymer and rubber powder are spray-coated onto sulfur-coated fertilizer granules, then coated uniformly and cured rapidly by the rotation of the rotary drum to form wear-resistant and smooth resin coating film. The controlled-release fertilizer has improved controlled release effect and degradability, thus can realize balanced supply of nutrients to crops for different period, and increase the productivity.

Description

technical field [0001] The invention belongs to the technical field of controlled-release fertilizer production. Background technique [0002] The prior art similar to the present invention is to spray sulfur and polymer coating on the surface of the compound fertilizer granules, so as to slow down the outward diffusion of fertilizer nutrients and ensure that the sulfur layer does not fall off. At present, polymer coatings mostly use vinyl acetate, acrylic acid or a mixture of diethylene glycol-triacetamide polytetramethylene acid and diisooxyester. The disadvantages are that the water blocking performance is not ideal or the condensation is not easy to spray, resulting in its control. The release effect was significantly lower. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a novel granular compound fertilizer coating process, with the purpose of solving the problem of unbalanced nutrient supply of crops due...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G5/00C08L7/00C08L25/00
Inventor 刘翠金王鑫
Owner HUADI BIOLOGICAL PRODS DEZHOU
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