Safeners and applications for the protection of cereal crops

Abstract

The invention discloses a safener for protecting cereal crops and its application. The safener includes the compound with the structural formula (I) and its intermediate. The safener of the present invention effectively increases the application range of this type of compound. When food crops use the safener and then apply herbicides, it can effectively prevent severe and extreme weather, especially sudden sunny weather, normal sunny days or long-term weather. The impact of time rainfall on the safety of herbicide use. The safener can effectively protect the root system of food crops, prevent the herbicide from sinking with the rainwater in the field and the drop of water level from affecting the root system of food crops, and effectively protect the food crops. , Reduce the impact of herbicides on food crops, and facilitate the improvement of weed control efficiency.

Description

Technical field [0001] The present invention relates to the technical field of weed control, in particular for protecting cereal crops application security agent. Background technique [0002] It refers weed herbicide is completely or selection can occur dead agents, also known as herbicides to destroy or inhibit the growth of a plant species. [0003] Effects wherein sodium chlorate, borax, Soft acid, trichloroacetic acid for any kinds of plants are dead action, its role by herbicides, plant and environmental conditions of the three factors. There are several types of herbicides by action should result Grass * * # * # * should be selected. [0004] (1) selective herbicides: these herbicides within a certain dose range used, can selectively kill certain harmful plants, the crop safety. Proper use of crop ground, can be attained only kill weeds without harming the crop. [0005] (2) Herbicide: Such herbicides kill all plants have effects such as paraquat, sodium pentachlorophenol,...

AI Technical Summary

Problems solved by technology

[0009] The application of herbicide safeners such as fenpyridine and pyraclofen-ethyl is very extensive, but the effect is not ideal. Often the application of herbicides after adding these safeners will still cause varying degrees of impact on food crops. When the herbicides are used alone Or combined with safener to use herbicides, herbicides such as acetochlor, acetochlor mixed with other closed herbicides (acetochlor mixture), etc., the use of closed herbicides in the early stage of food crops will not cause phytotoxicity in most cases , but encountering extreme weather, such as long-term rainy and sudden sunny weather, or long-term sunny and sudden rainy and sunny weather, etc., are very prone to phytotoxicity, the main reason is: long-term rainfall, acetochlor and acetochlor mixture will The sinking and the drop of the field water level, the herbicide contacts the root system of food crops during the sinking process, causing damage to the root system of food crops and affecting the normal growth of crops, the active ingredient of acetochlor on the soil surface is reduced, and the weeding effect is not ideal

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