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New uses of chitosan oligosaccharide

A technology of chitosan oligosaccharides and uses, applied in the agricultural field, can solve problems such as efficacy and safety hazards, and achieve the effects of green processing technology, low molecular weight, and improved plant stress resistance

Active Publication Date: 2022-01-28
青岛琛蓝健康产业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims at the problem that there are great hidden dangers in the effect and safety of the existing control methods, and provides a new application of chitosan oligosaccharides in the control of tomato seedling leafminer

Method used

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  • New uses of chitosan oligosaccharide
  • New uses of chitosan oligosaccharide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、1000

[0020] The control effect of different concentrations of chitosan oligosaccharides on tomato seedling leaf leafminer under embodiment 1,1000Da molecular weight

[0021] The molecular weight of the chitosan oligosaccharide used is 1000 Da, and the tomato seedlings are cultured in matrix.

[0022] Live-seeding the tomato seeds in 72-hole hole trays, spraying water appropriately according to the water content of the substrate before the cotyledons are flattened, and spraying the chitooligosaccharide water-soluble fertilizer mixture with different concentrations every day after the cotyledons are flattened, and the dosage is 1 / 3L / d each time , with water at the same time. No pesticides were used during the whole seedling raising period, the growth of tomato seedlings was observed, and the number of seedlings damaged by leafminer was counted. The chitosan oligosaccharide concentrations of the chitosan oligosaccharide water-soluble fertilizer group were 25mg / L, 100mg / L, and 150mg / L...

Embodiment 2

[0029] The control effect of different concentrations of chitosan oligosaccharides on tomato seedling leaf leafminer under embodiment 2,2000Da molecular weight

[0030] The molecular weight of the chitosan oligosaccharide used is 2000 Da, and the tomato seedlings are cultured in matrix.

[0031] Live-seeding the tomato seeds in 72-hole hole trays, spraying water appropriately according to the water content of the substrate before the cotyledons are flattened, and spraying the chitooligosaccharide water-soluble fertilizer mixture with different concentrations every day after the cotyledons are flattened, and the dosage is 1 / 3L / d each time , with water at the same time. No pesticides were used during the whole seedling raising period, the growth of tomato seedlings was observed, and the number of seedlings damaged by leafminer was counted. The chitosan oligosaccharide concentrations of the chitosan oligosaccharide water-soluble fertilizer group were 25mg / L, 100mg / L, and 150mg / L...

Embodiment 3

[0035] The control effect of different concentrations of chitosan oligosaccharides on tomato seedling leaf leaf miner under embodiment 3,3000Da molecular weight

[0036] The molecular weight of the chitosan oligosaccharide used is 3000 Da, and the tomato seedlings are cultured with matrix.

[0037]Live-seeding the tomato seeds in 72-hole hole trays, spraying water appropriately according to the water content of the substrate before the cotyledons are flattened, and spraying the chitooligosaccharide water-soluble fertilizer mixture with different concentrations every day after the cotyledons are flattened, and the dosage is 1 / 3L / d each time , with water at the same time. No pesticides were used during the whole seedling raising period, the growth of tomato seedlings was observed, and the number of seedlings damaged by leafminer was counted. The chitosan oligosaccharide concentration of the chitosan oligosaccharide water-soluble fertilizer group was 25mg / L, 100mg / L, and 150mg / L...

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Abstract

The application belongs to the field of agriculture, and discloses a new application of chitosan oligosaccharide in preventing and controlling tomato seedling leafminer. The raw material of chitosan oligosaccharide comes from shrimp and crab shells, which is natural and environmentally friendly. It is prepared by advanced biological enzymatic hydrolysis method. The processing technology is green and safe. Chitosan oligosaccharide has low molecular weight, good water solubility, and is easily absorbed by organisms. At the same time, chitosan oligosaccharides are of great significance in promoting the growth of beneficial microorganisms, improving plant stress resistance and producing immune killing effects on various bacteria, fungi and viruses. Tests have shown that in tomato seedling cultivation, spraying chitosan oligosaccharide solution on leaves can relieve insect damage to a certain extent and reduce the number of diseased tomato seedlings. Due to the high water solubility and safety of chitosan oligosaccharide, the technical requirements for operators are low, and it will not cause harm to organisms. It is an environmentally friendly, safe and effective agricultural preparation.

Description

technical field [0001] The invention belongs to the field of agriculture, and specifically relates to a new application of chitosan oligosaccharides, in particular to the application of chitosan oligosaccharides in preventing and treating tomato seedling leafminers. Background technique [0002] Leafminer is a common pest in vegetable production. Its larvae sneak into the leaves to feed on the mesophyll, leaving irregular linear shapes on the leaves. Under high temperature and high humidity conditions, it is easy to cause leafminer pests, and summer is the peak period of pest pests. During the growth process of tomato seedlings, they are susceptible to leaf miner pests when they are 2-7 leaves, and when the damage is serious, the latent marks are densely covered, and the leaves turn yellow and fall off, which seriously affects the photosynthesis of the leaves, which is not conducive to the growth of seedlings, and then affects the growth of vegetables. growth, and the later...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/16A01P7/04
CPCA01N43/16
Inventor 任慧慧杜玉芬高志王圆圆王尚龙曹廷峰邹圣灿
Owner 青岛琛蓝健康产业集团有限公司
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