Degradable bioactive liquid mulching film and preparation method thereof

A liquid mulch, biological activity technology, applied in the fields of botanical equipment and methods, chemical instruments and methods, liquid fertilizers, etc., can solve the problems of extracting products containing many impurities, long growth cycle, low efficiency, etc., to ensure air permeability And water permeability, improve fertility, easy to use effect

Inactive Publication Date: 2022-05-13
内蒙古科学技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkaline extraction of humic acid is simple and widely used, but the disadvantage is that it is time-consuming and produces about 20% of humic substances at the same time
The acid extraction method is simple in process, easy to operate, and has a short production cycle, but the extraction product contains more impurities, and this method is limited
The microbial dissolution method has the advantages of clean and pollution-free, mild reaction conditions, and high biochemical activity of the product, but its growth cycle is long and its efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A degradable bioactive liquid mulch film, comprising the following raw materials in parts by weight:

[0030] 150 parts of humic acid substances, 50 parts of modified cellulose, 20 parts of montmorillonite, 20 parts of silica powder, 30 parts of sodium alginate, 10 parts of gum arabic, 10 parts of film-forming aids, 15 parts of crosslinking agent, 10 parts of fertilizer, 5 parts of surfactant, 5 parts of pesticide, 200 parts of water.

[0031] The humic acid substances are prepared from weathered coal through microbial fermentation, and the preparation method includes the following steps:

[0032] (1) After pulverizing weathered coal to obtain coal particles, passing through a 400-mesh screen, adding straw powder and mixing evenly, the weight ratio of straw powder to coal particles is 5:80;

[0033] (2) The mixture obtained in step (1) is mixed evenly with the microbial inoculum, and the microbial inoculum is composed of saccharomyces, halophilic bacteria, Bacillus sub...

Embodiment 2

[0042] A degradable bioactive liquid mulch film, comprising the following raw materials in parts by weight:

[0043] 80 parts of humic acid substances, 100 parts of modified cellulose, 40 parts of montmorillonite, 20 parts of microsilica powder, 30 parts of sodium alginate, 10 parts of gum arabic, 15 parts of film-forming aids, 15 parts of crosslinking agent, 20 parts of fertilizer, 5 parts of surfactant, 3 parts of pesticide, 300 parts of water;

[0044] The humic acid substances are prepared from lignite through microbial fermentation, and the preparation method includes the following steps:

[0045] (1) pulverize lignite to obtain coal particles, pass through a 300-mesh sieve, add straw powder and mix evenly, and the weight ratio of the straw powder to coal particles is 3:80;

[0046] (2) The mixture obtained in step (1) is mixed evenly with the microbial inoculum, and the microbial inoculum is composed of saccharomyces, halophilic bacteria, Bacillus subtilis, actinomycetes,...

Embodiment 3

[0055] A degradable bioactive liquid mulch film, comprising the following raw materials in parts by weight:

[0056] 100 parts of humic acid substances, 80 parts of modified cellulose, 35 parts of montmorillonite, 13 parts of microsilica powder, 25 parts of sodium alginate, 8 parts of gum arabic, 16 parts of film-forming aids, 12 parts of crosslinking agent, 8 parts of fertilizer, 3 parts of surfactant, 4 parts of pesticide, 150 parts of water.

[0057] The humic acid substances are prepared from weathered coal and coal gangue through microbial fermentation, and the preparation method includes the following steps:

[0058] (1) Pulverize weathered coal and coal gangue with a weight ratio of 2:1 to obtain coal particles, pass through a 350-mesh screen, add straw powder and mix evenly, and the weight ratio of the straw powder to coal particles is 3:80;

[0059] (2) The mixture obtained in step (1) is mixed evenly with the microbial inoculum, and the microbial inoculum is compose...

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Abstract

The decomposed coal, the lignite and the coal gangue are used as main raw materials to prepare humic acid substances, meanwhile, the straw powder is used as a raw material to prepare modified cellulose, the humic acid substances and the modified cellulose are compounded to serve as colloidal film forming substances of the liquid mulching film, and mineral materials such as montmorillonite and silica powder are added; the degradable bioactive liquid mulch film is prepared from the raw materials, the corresponding coalescing agent, the cross-linking agent and the like, the mulch film is easy to form after being sprayed and convenient to use, the soil fertility can be improved, good air permeability and water permeability can be guaranteed, and growth and development of crops can be promoted. Meanwhile, the used raw materials are all green degradable substances, are fast in degradation, high in degradation rate, free of residues and pollution, and can replace plastic mulching films for use; the used solvent is mainly water, volatile alcohol and the like, so that the environment is not polluted, and the membrane liquid is simple in preparation process, convenient to operate, economical and environment-friendly, and accords with ecological agriculture and green manufacturing processes.

Description

technical field [0001] The invention belongs to the technical field of agricultural mulch, and in particular relates to a degradable bioactive liquid mulch and a preparation method thereof. Background technique [0002] Plastic mulch cultivation technology can meet the needs of crops for heat preservation, moisture conservation, frost protection, and fertility preservation, and can greatly increase the yield of crops. However, the strength of plastic mulch is low, easy to break, and it is difficult to recycle after use, and it is easy to cause serious "white pollution" to the soil and the environment if it is discarded in the soil. [0003] At present, humic acid is usually used to prepare multifunctional and degradable liquid mulch to overcome the problem of "white pollution". Spraying it on the soil surface can form a thin layer of dark brown polymer chemical protective film to prevent the volatilization of soil moisture , without hindering the sufficient penetration of r...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C05G3/00C05G3/60C05G3/80C05G5/20C09K17/40C09K17/52A01G13/02C09K101/00
CPCC05D9/00C05G3/00C05G3/60C05G3/80C05G5/20A01G13/0262C09K17/52C09K17/40C09K2101/00C05F11/00C05F11/02C05F11/08C05G1/00
Inventor张秀娟白晓晔随洋段开红
Owner内蒙古科学技术研究院