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A liquid state mulching film forming material and method for preparing same

A film-forming material and liquid mulching film technology, applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., can solve problems such as strength, cost and degradation characteristics, difficulty in recycling residual film, and aggravating residual film pollution, etc. To achieve the effect of controlling topsoil loss and dust, good adhesion, and improving aggregate structure

Inactive Publication Date: 2003-12-31
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In order to reduce the cost of covering, the thickness of the film has been reduced to less than 10 microns, which makes it very difficult to recycle the residual film and aggravates the pollution of the residual film to the farmland
Degradable plastic mulches mainly come in two forms: disintegrating and photodegradable, but both have problems in terms of strength, cost and degradation characteristics, which limit their wide application.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0020] specific implementation plan

[0021] Biological liquid mulch film-forming material of the present invention comprises kelp, starch phosphate, alpha starch and ammonium carbonate (NH 4 HCO 3 ·NH 2 COONH 4 ) four components, prepared by semi-dry reaction in kneader and screw extruder. Wherein the content of phosphoric acid starch is 100% of the quality of kelp powder, the content of alpha starch is 50% of the quality of kelp powder, and the content of ammonium carbonate is 10% of the quality of kelp powder.

[0022] The preparation method of the above-mentioned biological liquid mulch film-forming material includes:

[0023] (1) Soak the dried kelp to 5-6 times its original mass;

[0024] (2) with 10% H 2 o 2 Soak the seaweed for 5-8 hours;

[0025] (3) Chopping the soaked and decolorized kelp to 5-8 mm;

[0026] (4) Ammonium carbonate (NH 4 HCO 3 NH 2 COONH 4 ), starch phosphate, alpha starch;

[0027] (5) Mix the above-mentioned materials and put them int...

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Abstract

The biological liquid mulching filming material includes four kinds of components including kelp powder, starch phosphate, alpha-starch and ammonium carbonate. The preparation process includes soaking, decoloring and crushing kelp; adding starch phosphate, alpha-starch and ammonium carbonate; mixing in a kneading machine or screw extruder; pelletizing and drying. The biological liquid mulching filming material contains no polymer and chemical fertilizer, and has no negative effect on soil, underground water and other crop growth environment. Used mulching residue can raise organic matter content in soil to improve the aggregate structure and fix surface soil.

Description

technical field [0001] The invention relates to a liquid mulch film-forming material and a preparation method thereof, in particular to a degradable biological liquid mulch film-forming material and a preparation method thereof. Background technique [0002] At present, most of the polyethylene mulch used in agricultural production is still difficult to degrade. In order to reduce the cost of covering, the thickness of the film has been reduced to less than 10 microns, which has caused great difficulties in the recovery of the residual film and aggravated the pollution of the residual film to the farmland. There are mainly two forms of degradable plastic mulches: disintegrating and photodegradable, but both have problems in terms of strength, cost and degradation characteristics, which limit their wide application. Contents of the invention [0003] The purpose of the present invention is to provide a degradable bio-liquid mulch film-forming material suitable for spraying...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/26C08L3/04C09K17/52
Inventor 张绍英
Owner CHINA AGRI UNIV
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