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Garlic residue-based liquid mulching film and preparation method thereof

A liquid mulch, garlic residue-based technology, applied in the field of agricultural mulch, can solve the problems of agricultural soil ecological environment destruction, water retention, weakened thermal insulation, non-biodegradability, etc.

Active Publication Date: 2021-10-29
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This traditional plastic mulch has the following disadvantages: (1) it is not biodegradable and will cause damage to the ecological environment of agricultural soil; (2) it has a single function. Holes (sometimes it is necessary to lift the plastic film as a whole), and apply pesticides that can inhibit the growth of harmful bacteria or pests in the soil from the broken hole, but the water retention and heat preservation effect of the holed plastic film on the soil will be seriously affected. weaken
At present, there is no report on the product of making garlic residue into liquid mulch

Method used

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  • Garlic residue-based liquid mulching film and preparation method thereof
  • Garlic residue-based liquid mulching film and preparation method thereof
  • Garlic residue-based liquid mulching film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Crushing the garlic residues into a garlic residue slurry with a pulverizer, and filtering the obtained garlic residue slurry with a sieve, so that the particle size of the garlic residue in the filtered garlic residue slurry is less than 10 mesh;

[0041] (2) Mix pregelatinized starch and water at 28°C to form a starch slurry, wherein the mass ratio between pregelatinized starch and water is 0.15:1;

[0042] (3) Mix the garlic residue slurry obtained in step (1) with the starch slurry obtained in step (2), and stir at 35°C for 1 hour at a stirring speed of 200r / min to obtain garlic residue-starch slurry , wherein the mass ratio between the garlic residue slurry and the starch slurry is 0.09:1;

[0043] (4) the garlic dregs-starch slurry that step (3) obtains is joined in the there-necked flask that is equipped with agitator, thermometer and condenser, then adds oxidant aqueous solution while stirring at 80 DEG C, stirring speed is 1500r / min, the stirring time is 1...

Embodiment 2

[0049] (1) Crushing the garlic residues into a garlic residue slurry with a pulverizer, and filtering the obtained garlic residue slurry with a sieve, so that the particle size of the garlic residue in the filtered garlic residue slurry is less than 10 mesh;

[0050] (2) Mix pregelatinized starch and water at 32°C to form a starch slurry, wherein the mass ratio of pregelatinized starch and water is 0.2:1;

[0051] (3) Mix the garlic residue slurry obtained in step (1) with the starch slurry obtained in step (2), and stir at 28°C for 2 hours at a stirring speed of 1000r / min to obtain garlic residue-starch slurry , wherein the mass ratio between the garlic residue slurry and the starch slurry is 0.5:1;

[0052] (4) the garlic dregs-starch slurry that step (3) obtains is joined in the there-necked flask that is equipped with agitator, thermometer and condenser, then adds oxidant aqueous solution while stirring at 88 ℃, stirring speed is 1000r / min, the stirring time is 3h, and th...

Embodiment 3

[0058] (1) Crushing the garlic residues into a garlic residue slurry with a pulverizer, and filtering the obtained garlic residue slurry with a sieve, so that the particle size of the garlic residue in the filtered garlic residue slurry is less than 10 mesh;

[0059] (2) Mix the pregelatinized starch and water at 25°C to form a starch slurry, wherein the mass ratio between the pregelatinized starch and water is 0.18:1;

[0060] (3) Mix the garlic residue slurry obtained in step (1) with the starch slurry obtained in step (2), and stir at 25°C for 3 hours at a stirring speed of 2000r / min to obtain garlic residue-starch slurry , wherein the mass ratio between the garlic residue slurry and the starch slurry is 0.3:1;

[0061] (4) the garlic dregs-starch slurry that step (3) obtains is joined in the there-necked flask that is equipped with agitator, thermometer and condenser, then adds oxidant aqueous solution while stirring at 85 ℃, stirring speed is 500r / min, the stirring time ...

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Abstract

The invention provides a garlic residue-based liquid mulching film and a preparation method thereof, the mulching film is prepared by using garlic residue slurry, pre-gelatinized starch and an acrylic monomer mixture as main raw materials, and the reaction process relates to a pre-oxidation process, a pre-emulsification process and an emulsion free radical polymerization process under the action of an initiator; the emulsion obtained after the reaction is not easy to layer and has stability, proper viscosity and sprayability; and compared with bare soil which is not covered with the mulching film, the garlic residue-based mulching film can improve the water content in the soil and the soil temperature, and can also improve the yield of the pakchoi. The garlic residue-based liquid mulching film also can resist the invasion of plutella xylostella to pakchoi. The crop waste resource, namely the garlic residues, is fully utilized, so that the method is low in cost, few in related production links, easy to operate and suitable for popularization and application.

Description

Technical field: [0001] The invention provides a garlic residue-based liquid film and a preparation method of the liquid film, belonging to the technical field of agricultural film. Background technique: [0002] China is the main country that produces garlic in the world. The history of garlic planting in China can be traced back to two thousand years ago. The garlic cultivation in my country not only has a long history, but also has a large cultivation area and high output. Compared with other crops, garlic is rich in alliin, which exists in a stable and odorless form, but after garlic is sliced ​​or broken, the alliinase in it is activated, and alliin is present in alliin Under the catalysis of the enzyme, allicin is formed as a colorless oil. Allicin has various biological activities, such as preventing and treating cardiovascular diseases, anti-tumor and anti-pathogenic microorganisms, etc. Long-term consumption of allicin can play a role in disease prevention and heal...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F251/02C08F289/00C08F220/18C08F220/14C08F220/06C08K5/42C08J5/18A01G13/02
CPCC08F251/00A01G13/0275C08J5/18C08J2351/02C08F251/02C08F289/00C08J2451/00C08K5/42C08F220/1804C08F220/14C08F220/06Y02W90/10Y02A40/28
Inventor 李文卓耿浩浩王丹阳
Owner NANJING FORESTRY UNIV
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