Safener used for protecting grain crops and application of safener

Abstract

The invention discloses a safener used for protecting grain crops and an application of the safener. The safener comprises a synthestic compound which has a structural formula (I) and is used as an intermediate. By using the safener disclosed by the invention, the application ranges of the compounds are effectively widened, if a herbicide is applied after the safener is used for the grain crops, influences of severe extreme weather and particularly sudden fine weather and long-term fine weather or long-term rainfall to the use safety of the herbicide can be effectively avoided, and the safener can effectively protect the root systems of the grain crops, prevent the herbicide from affecting the root systems of the grain crops with the field rainwater submergence and water level reduction, effectively play a role in protecting the grain crops, reduce the influences of the herbicide to the grain crops and conveniently improve the weed control effect.

Description

Technical field [0001] The invention relates to the technical field of weed control, in particular to a safener and application for protecting cereal crops. Background technique [0002] Herbicides are agents that can cause weeds to die completely or selectively. They are also known as herbicides. They are used to destroy or inhibit plant growth. [0003] Among them, sodium chlorate, borax, arsenate, and trichloroacetic acid have a deadening effect on any kind of plant, and its effect is affected by three factors: herbicide, plant and environmental conditions. According to the role of herbicides, there are the following types, which should be selected according to the grass conditions. [0004] (1) Selective herbicides: This kind of herbicides can be used in a certain dose range to selectively kill certain harmful plants, and the crops are safe. The correct use in crop fields can achieve the purpose of killing weeds without harming crops. [0005] (2) Bactericidal herbicides: These ...

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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