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Agricultural plastic mulching film for controlling alternaria brassicicola of vegetables and preparation method thereof

A technology of black spot bacteria and plastic mulch, which is applied in botany equipment and methods, applications, plant protection, etc., can solve the problems of easy leakage of dyes from the surface of the film, turbid color, and uneven dispersion, so as to promote uniform dispersion and avoid Exudation, enhanced protective effect

Inactive Publication Date: 2018-03-09
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current process, the agricultural film dyes have disadvantages such as uneven dispersion and turbid color quality. At the same time, the dyes are easy to seep out of the surface of the film, reducing the effect.

Method used

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  • Agricultural plastic mulching film for controlling alternaria brassicicola of vegetables and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The steps of the agricultural plastic mulch film for preventing and controlling vegetable black spot bacteria prepared by the present invention are as follows:

[0034] a. Take plant stalks, air-dry them, then peel them, grind them, and sieve them to prepare materials. Add a mixed solution of peracetic acid and glacial acetic acid with a concentration of 20% by mass percentage in the sieved corn stalk cobs. The volume ratio of 20% peracetic acid to glacial acetic acid is 1:1, mix evenly, treat at 60°C for 36h, the mass concentration of the material after treatment is 15%, completely transfer to the 300 mesh slurry bag, use Soak and wash in ionized water until the washing water is neutral, centrifuge to remove excess water, and obtain cellulose with a dryness of 15%, and then use mechanical refining to refine the cellulose to obtain micron cellulose ;

[0035] B, add cobalt blue pigment in the micron cellulose that a step obtains, the addition of cobalt blue dye is 5% o...

Embodiment 2

[0042] The steps of the agricultural plastic mulch film for preventing and controlling vegetable black spot bacteria prepared by the present invention are as follows:

[0043] a. Take plant stalks, air-dry them, then peel them, grind them, and sieve them to prepare materials. Add a mixture of peracetic acid and glacial acetic acid with a mass percentage concentration of 30% in the sieved corn stalk cobs, wherein the mass percentage concentration is The volume ratio of 30% peracetic acid to glacial acetic acid is 2:1, mix evenly, treat at 60°C for 24 hours, the mass concentration of the material after treatment is 10%, completely transfer to 600 mesh slurry bag, use Soak and wash in ionized water until the washing water is neutral, centrifuge to remove excess water, and obtain cellulose with a dryness of 20%, and then use mechanical refining to refine the cellulose to obtain micron cellulose ;

[0044] B, add cobalt blue pigment in the micron cellulose that a step obtains, the...

Embodiment 3

[0051] The steps of the agricultural plastic mulch film for preventing and controlling vegetable black spot bacteria prepared by the present invention are as follows:

[0052] a. Take plant stalks, air-dry them, then peel them, grind them, and sieve them to prepare materials. Add a mixed solution of peracetic acid and glacial acetic acid with a mass percentage concentration of 25% in the sieved corn stalk cobs, wherein the mass percentage concentration is The volume ratio of 25% peracetic acid to glacial acetic acid is 1.5:1, mix evenly, treat at 60°C for 28h, the mass concentration of the material after treatment is 10%, completely transfer to 500 mesh slurry bag, use Soak and wash in ionized water until the washing water is neutral, centrifuge to remove excess water, and obtain cellulose with a dryness of 18%, and then use mechanical refining to refine the cellulose to obtain micron cellulose ;

[0053] B, add cobalt blue pigment in the micron cellulose that a step obtains,...

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Abstract

The invention discloses an agricultural plastic mulching film for controlling alternaria brassicicola of vegetables and a preparation method thereof. The preparation method comprises the following steps: a, extracting cellulose from plant straw, and pulping and refining to prepare micron cellulose; b, adding cobalt blue pigments into the micron cellulose, and uniformly mixing; c, impacting a mixture with high-pressure hot airflow for entwisting and combining closely fibers in fiber webs of the mixture, thereby forming a fiber web in which cobalt blue dyes are dispersed; d, preparing modified polyvinyl alcohol; e, heating and melting the fiber web and modified polyvinyl alcohol in an extruder, and performing plastic extrusion to obtain a blue film; and f, performing corona treatment and hotpress molding on the blue film, thereby obtaining the agricultural composite mulching film. A barrier layer in the double-layer composite mulching film disclosed by the invention is a blue layer capable of inhibiting alternaria brassicicola, and by virtue of the auxiliary dense fiber web, brassicaceous vegetables can be effectively prevented from being infected with alternaria brassicicola, the effects of maintaining heat and retaining water are achieved, and the film is excellent in mechanical property. The film has environmental-friendly and biodegradable properties.

Description

technical field [0001] The invention belongs to the technical field of agricultural plastic film preparation, and in particular relates to an agricultural plastic plastic film for preventing and controlling vegetable black spot bacteria and a preparation method thereof. Background technique [0002] Brassicaceae black spot fungus is caused by Pseudomonas black spot bacterium of Brassicaceae. The leaves are initially water-soaked lesions, which later turn dark brown or light brown, and become irregular and paper-thin after expanding. Stems and pedicels initially have oil-soaked small spots, which later turn into purple-black irregular-shaped lesions. The infected spots on pods are round or nearly round, dark brown. Under natural conditions, it mainly infects a variety of cruciferous plants such as cabbage, radish, cabbage, cauliflower, turnip, mustard greens, high cabbage, Sanhe island cabbage, and rapeseed. Bacterial black spot of cruciferous vegetables mainly occurs in wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L3/10C08L1/02C08K13/02C08K3/24C08K3/36C08K5/07C08K5/053C08J5/18C08J7/12A01G13/02
CPCA01G13/0275C08J5/18C08J7/08C08J7/123C08J2329/04C08J2401/02C08J2403/10
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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