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Method for alleviating toxicity of herbicides to crops

A technology for crops and herbicides, which is applied in the field of herbicide phytotoxicity mitigation agents to achieve the effects of facilitating popularization, improving phytotoxicity and promoting agricultural economic development

Active Publication Date: 2015-07-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium alginate and sodium alginate oligosaccharides as herbicide mitigants have not been reported

Method used

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  • Method for alleviating toxicity of herbicides to crops
  • Method for alleviating toxicity of herbicides to crops
  • Method for alleviating toxicity of herbicides to crops

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 Sodium Alginate Oligosaccharides Alleviating Effects of Phytotoxicity on Shima and Kuoji Mixture

[0024] The test site is located in Xiwang Village, Zhongzhang Town, Jingyang County. It belongs to the double irrigation area of ​​wells and canals, with convenient irrigation, good drainage, flat terrain and fertile soil. The previous stubble of the test field is corn, the soil fertility is uniform, and the mixed pattern is measured before sowing, total nitrogen 2.0g / kg, total phosphorus 0.4g / kg, total potassium 8.0g / kg, alkaline nitrogen 76mg / kg, available phosphorus 28mg / kg, Available potassium 170mg / kg, pH7.8.

[0025] On October 15, 2011, Tongyi made a wide-width drill, the wheat variety was Xiza 5 (provided by the Agricultural College of Northwest A&F University), and the seeding rate was 225kg / hm 2 , After sowing, fill the stubble with water. On November 23, 2011, the leaves were sprayed with a mixture of Shima and Kuoji for chemical weeding of winter wh...

Embodiment 2

[0039] Example 2 Sodium alginate oligosaccharides alleviates the phytotoxicity of Dole on watermelons in greenhouses

[0040] The test site is located in Qianer Town, Pucheng County, Shaanxi Province. The test site has good drainage, flat terrain, fertile soil, meticulous site preparation, and sufficient base fertilizer. After ridging, spray Dour evenly. Use 96% Doul 70ml per mu to block the soil, and then The melon seedlings are planted with film-covered holes, and the watermelon variety is the gift watermelon Huang Xiaofeng.

[0041] The soil-treated greenhouses gradually showed symptoms of herbicide phytotoxicity 7 days after planting, manifested as slow seedling growth, slow growth, narrow leaves and other symptoms. After 20 days of planting, 30 plants were selected for measurement.

[0042] Table 3. Questionnaire on growth inhibition of watermelon by herbicide Dole

[0043]

[0044] It can be seen from the table that the growth of watermelon was significantly inhibite...

Embodiment 3

[0053] Example 3 Sodium alginate oligosaccharides alleviates the phytotoxicity of sodium dimethyltetrachloride on rice

[0054] The test site is located in Daying Town, Zhuanghe City, Dalian City, with convenient irrigation, good drainage, flat terrain and fertile soil. The previous stubble of the experimental field was paddy rice, and the soil fertility was uniform. The rice variety is Liaoyou 5218. It was sprayed at the tillering stage (June 10, 2013), and 60 grams of pure sodium dimethyltetrachloride was applied per mu. There were many grasses. It was sprayed twice and occurred on June 20. Drug damage. Symptoms of phytotoxicity include open tillers of rice, deformed and curled leaves in the shape of chicken feet or onion tubes; brittle, easily broken stems with swollen stem bases; short, thick roots without root hairs, and short plants. Sodium alginate oligosaccharides were used to alleviate phytotoxicity experiments. The concentration of sodium alginate oligosaccharides ...

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Abstract

The invention relates to a method for alleviating the toxicity of herbicides to crops. The method is concretely characterized in that sodium alginate and sodium alginate oligosaccharides are adopted as active components to alleviate the toxicity of herbicides to crops. One or two combination solutions containing sodium alginate and the sodium alginate oligosaccharides can be applied after the toxicity generation of the herbicides used on the crops or while applying the herbicides in order to alleviate the toxicity of the herbicides and improve the output by 3-20%. Sodium alginate and sodium alginate oligosaccharides adopted as herbicide toxicity alleviating agents in the invention are from natural sources, are green and nontoxic, are simple to use, and are convenient to popularize. The method is of great economic and social significance to promote the development of agricultural economy.

Description

technical field [0001] The invention relates to a phytotoxicity mitigating agent for herbicides, specifically, sodium alginate and sodium alginate oligosaccharides are used as active components to alleviate the phytotoxicity caused by herbicides to crops. technical background [0002] Herbicides are widely used in agriculture because of their low cost, high efficiency, easy operation, labor saving, and obvious weed control effects. However, improper use of herbicides often causes phytotoxicity to crops. When herbicides are used Excessive dosage, improper mixing, and abnormally bad environmental conditions will cause phytotoxicity to crops. Herbicide phytotoxicity leads to abnormal growth of crops, twisted stems and leaves, clumps, dwarfed plants, flowers but not fruit, and even dead seedlings and reduced yield. The light damage of herbicides will reduce the yield by 10-40%, and the serious ones will completely destroy the species. The area where herbicide damage occurs all...

Claims

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Application Information

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IPC IPC(8): A01N25/32
Inventor 赵小明刘启顺尹恒王文霞陈银潮张睿
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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