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Degradable liquid mulching film and preparation method thereof

A technology of liquid mulch and solution, applied in botany equipment and methods, plant protection, application, etc., can solve the problems affecting soil physical and chemical properties and soil structure, complex liquid mulch preparation method, complex liquid mulch formula, etc., to reduce tillage The effect of reducing the salt content of the layer, inhibiting water evaporation, and improving the microbial flora

Inactive Publication Date: 2019-11-08
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These liquid mulch films are likely to cause changes in soil pH, which will affect the physical and chemical properties and soil structure of the soil, which is not conducive to crop growth.
There is also a part of the liquid film preparation method is complicated, such as the application number 201410720959.2 discloses the title "a liquid film and its preparation method" and the application number 201710159176.5 discloses the title "production method of straw composite liquid film", such liquid The film formula is complex and the preparation process is cumbersome

Method used

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  • Degradable liquid mulching film and preparation method thereof
  • Degradable liquid mulching film and preparation method thereof
  • Degradable liquid mulching film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1. Composition of raw materials:

[0053] Polyvinyl alcohol 1g, carboxymethylcellulose potassium 3g, chitosan 0.6g, gelatin 0.4g, humic acid 0.1g.

[0054] 2. Preparation method:

[0055] (1) Polyvinyl alcohol and potassium carboxymethylcellulose are added to 100ml of water, and 6ml of glycerin is added to prepare solution A;

[0056] (2) Add humic acid to solution A and heat to 85°C for 1 hour to make solution B;

[0057] (3) dissolving gelatin and chitosan in water at 85° C. respectively, and preparing solutions C and D with a concentration of 0.05 g / ml;

[0058] (4) Add solution C and solution D to solution B and mix them evenly, put them in a water bath at 50°C and let them stand for reaction until the air bubbles disappear to prepare a degradable liquid mulch film.

[0059] 3. How to use

[0060] The prepared liquid mulch film is diluted 5 times with water, put into a sprinkler and sprayed to form a film.

Embodiment 2

[0062] 1. Composition of raw materials:

[0063] Polyvinyl alcohol 1.5g, carboxymethylcellulose potassium 4.5g, chitosan 0.9g, gelatin 0.6g, humic acid 0.10g.

[0064] 2. Preparation method:

[0065] (1) Polyvinyl alcohol and potassium carboxymethylcellulose were added to 150ml of water, and 9ml of glycerin was added to prepare solution A;

[0066] (2) adding humic acid to solution A and heating to 90°C for 1 hour to make solution B;

[0067] (3) dissolving gelatin and chitosan in water at 90° C. respectively, and preparing solutions C and D with a concentration of 0.05 g / ml;

[0068] (4) Add solution C and solution D to solution B and mix them evenly, put them in a water bath at 55°C and let them stand for reaction until the air bubbles disappear to obtain a degradable liquid mulch film.

[0069] 3. How to use

[0070] The prepared liquid mulch film is diluted 6 times with water, loaded into a sprinkler and sprayed to form a film.

Embodiment 3

[0072] 1. Composition of raw materials:

[0073] Polyvinyl alcohol 0.5g, sodium carboxymethylcellulose 1.5g, chitosan 0.6g, gelatin 0.4g, humic acid 0.05g.

[0074] 2. Preparation method:

[0075] (1) Add polyvinyl alcohol and sodium carboxymethyl cellulose to 50ml of water, and add 3ml of glycerin at the same time to prepare solution A;

[0076] (2) Add humic acid to solution A and heat to 80°C to mix and mix for 1.5 hours to prepare solution B;

[0077] (3) dissolving gelatin and chitosan in water at 80° C. respectively, and preparing solutions C and D with a concentration of 0.05 g / ml;

[0078] (4) Add solution C and solution D to solution B and mix them evenly, put them in a water bath at 45°C and let them stand for reaction until the air bubbles disappear to obtain a degradable liquid mulch film.

[0079] 3. How to use

[0080] The prepared liquid mulch film is diluted 4 times with water, put into a sprinkler and sprayed to form a film.

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Abstract

The invention discloses a degradable liquid mulching film and a preparation method thereof. The degradable liquid mulching film comprises the following raw materials by weight: 0.5-1.5 parts of polyvinyl alcohol, 1.5-4.5 parts of carboxymethylcellulose, 0.3-0.9 part of chitosan, 0.2-0.6 part of gelatin, and 0.05-0.10 part of humic acid. The degradable liquid mulching film has the characteristics of simple preparation method, low cost and convenient use, strong water absorption and water retention capacity, easily degradable components and no residue. Film mulching and cemented soil grains areutilized to reduce the evaporation of soil water, reduce the salt content of a plow layer, improve the physical and chemical properties of soil, and increase the soil temperature. The degradable liquid mulching film also has bactericidal effect and the capability of inhibiting plant viruses and viroids, and protects plants from the infection of bacteria and viruses, at the same time can promote the proliferation of beneficial bacteria in soil and obviously improve microfloras.

Description

technical field [0001] The invention relates to the field of liquid mulch, in particular to a degradable liquid mulch and a preparation method thereof. Background technique [0002] The production volume of agricultural film in my country is the first in the world; the area covered by agricultural film is the first in the world, of which the area covered by plastic film is 380 million mu, which is 1.6 times the total area covered by all other countries in the world. Such a huge amount has brought huge benefits to agricultural production, but also brought "white pollution". [0003] The residual amount of plastic film in the soil of long-term film-mulched farmland is 71.9-259.1kg·hm -2 Between 200-400 years, the degradation time is generally 200-400 years, which has a series of adverse effects on soil and crops, hinders soil water infiltration and evaporation, and reduces soil porosity and permeability. When the amount of residual film is large, it can significantly reduce ...

Claims

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Application Information

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IPC IPC(8): C08L1/28C08L29/04C08L5/08C08L89/00C08L97/00C08J5/18A01G13/02
CPCA01G13/0275C08J5/18C08J2301/28C08J2405/08C08J2429/04C08J2489/00C08J2497/00
Inventor 诸葛玉平杨全刚娄燕宏刘洪甜张辉宋付朋
Owner SHANDONG AGRICULTURAL UNIVERSITY
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