Degradable liquid mulching film and production method thereof

A liquid mulch and aqueous solution technology, applied in chemical instruments and methods, organic fertilizers, fertilizer mixtures, etc., can solve the problems of low cross-linking degree, large usage amount, and reduced yield, etc., to solve white pollution, inhibit water evaporation, The effect of increasing the effective accumulated temperature
CN101445731AInactive Publication Date: 2009-06-03SHANDONG SI DA KE BIODEGRADABLE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG SI DA KE BIODEGRADABLE TECH CO LTD
Publication Date
2009-06-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a degradable liquid mulching film and a production method thereof, particularly to an environment-friendly degradable liquid mulching film with straws as a basic raw material and a production method thereof. The degradable liquid mulching film is prepared from steaming slurry of crop straws (such as wheat straws, rice straws, cotton straws, wood shavings, and the like) or straws paper-making black liquor as a main raw material by a series of reactions, such as sulfonation, crosslinking and copolymerization, of macromolecules in the slurry or the black liquor, such as lignin, cellulose and polysaccharides, under the action of a film formation additive. The macromolecules in the degradable liquid mulching film have a large amount of hydrophilic groups which can effectively catch the water molecules evaporated and diffused from soil to the air, so as to prevent water evaporation and heat loss arising therefrom, thereby increasing the temperature and preserving soil moisture. The degradable liquid mulching film is helpful for increasing crop yield and improving crop quality; and the yield is higher than that by use of a plastic mulching film, and the per mu yield is increased by more than 5%. The degradable liquid mulching film can replace the conventionally used plastic mulching film.
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Description

Technical field:

[0001] The invention belongs to the new agricultural technology and relates to the field of environmental protection, in particular to a degradable liquid plastic film with straw as the basic raw material and a manufacturing method thereof. Background technique:

[0002] Plastic film mulching cultivation technology is an important means of agricultural production. The use of plastic film mulching can meet the needs of crops to increase temperature, preserve moisture, and maintain fertility. It is mainly used for early mulching of crops in northern, arid, and cold regions, as well as wind and sand fixation. Improve quality, early maturity and other functions.

[0003] Relevant statistics show that the area of ​​land degradation and desertification in my country increases by 43% annually, with an average annual increase of 2,100 square kilometers of desertified land. At present, more than 80% of the arable land in our country has obstacles such as drought, lo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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