Straw-based amphoteric liquid manure controlled-release agent and application thereof

A controlled-release agent and straw technology, applied in the chemical and environmental fields, can solve the problems of poor environmental friendliness, poor salt tolerance, toxicity of reactants and by-products, etc., and achieve strong adjustment of salt ion concentration, low cost, and good water and fertilizer control Effect

Inactive Publication Date: 2010-09-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the poor salt tolerance of previous products, toxic reactants and by-products, poor environmental friendliness and mostly single-ion type, the purpose of the present invention is to provide a product that is easy to prepare, has little secondary pollutio...

Method used

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  • Straw-based amphoteric liquid manure controlled-release agent and application thereof
  • Straw-based amphoteric liquid manure controlled-release agent and application thereof
  • Straw-based amphoteric liquid manure controlled-release agent and application thereof

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with specific embodiments, but the protection content of the present invention is not limited thereto.

[0023] 1. Preparation of new straw-based amphoteric water fertilizer controlled release agent

[0024] (1) Cut the wheat straw into pieces with a length of about 10 cm, and wash with tap water to remove dirt and dust. After washing, air-dry under natural conditions or bake at 105°C for 24 hours; crush the above-mentioned wheat straw straw, pass through a 100-mesh sieve, and keep the straw powder for future use.

[0025] (2) Take the straw powder, add 10% (V / V) ammonia water with the mass ratio of straw powder and ammonia water as 1:12, soak for 48 hours, take out the soaked straw powder, filter it and wash it with distilled water, then dry it Dry;

[0026] (3) Take the straw powder treated in step (2), add a nitric acid solution with a concentration of 1mol / L at a mass ratio of straw powder to...

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Abstract

The invention discloses a straw-based amphoteric liquid manure controlled-release agent, which is prepared under a condition that wheat straws, acrylic acid, acrylamide and dimethyl diallyl ammonium chloride are used as raw materials and persulfate, cerium nitrate amine and sodium sulfite as composite initiators. The straw-based amphoteric liquid manure controlled-release agent has the characteristics of high water absorbency, wide pH value application range, strong salty ion concentration adjustment, long useful substance storage time, biodegradability and low cost, is very favorable for liquid manure control, and can be widely applied to agricultural moisture maintenance and/or fertilizer maintenance. Simultaneously, a preparation method of the straw-based amphoteric liquid manure controlled-release agent has the advantages of simple and direct process, low cost, economical efficiency, practicability and the like.

Description

technical field [0001] The invention relates to an amphoteric water-fertilizer controlled-release agent, in particular to a straw-based amphoteric water-fertilizer controlled-release agent as well as a preparation method and application thereof, which belong to the technical fields of chemistry and environment. Background technique [0002] Super absorbent resin is a functional polymer material that can absorb hundreds to thousands of times its own weight. In the application of agriculture and forestry, the development and application of superabsorbent resin is undoubtedly an effective new way in the research hotspots of water saving, water retention and soil improvement. Studies have shown that the application of a small amount of chemical control agents to regulate soil moisture and nutrients can greatly improve irrigation water and nitrogen and phosphorus fertilizer use efficiency, and control the loss of nitrogen and phosphorus. Because the superabsorbent resin not only...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 李倩马作豪岳钦艳高宝玉许醒钟倩倩
Owner SHANDONG UNIV
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