Wettable powder for preventing and removing annual weeds in direct seeding rice field

Abstract

The invention discloses a wettable powder for controlling annual weeds in a direct-seeding rice field. The wettable powder contains additives and fillers, and also contains quinclorac and pyrazosulfuron-methyl which account for 60% of the total mass fraction of the wettable powder. and bispyribac technical; the described quinclorac accounts for 50% of the total mass fraction of the wettable powder; the described pyrazosulfuron-methyl accounts for 5% of the total mass fraction of the wettable powder; the described bispyribac accounts for 5% of the total mass fraction of wettable powder. The present invention is formed by mixing pyrazosulfuron-methyl, quinclorac and bispyribac, which is safe for rice and has a wide herbicidal spectrum, and the mixture of the three has a better control effect on annual weeds in direct-seeding rice fields; The present invention comprehensively considers the production cost, the weeding effect, and the combined effect. After the three are compounded, the combined effect on barnyardgrass, stephenia, bermudagrass and sweet sausage belongs to the synergistic effect, which can prevent and overcome the generation of resistance and prolong the life of the disease. Product life, save labor, reduce costs and other advantages.

Description

technical field [0001] The invention belongs to the technical field of pesticide preparations, and relates to a wettable powder, in particular to a wettable powder for controlling annual Gramineae, Cyperaceae and some broad-leaved weeds in rice direct seeding fields. Background technique [0002] Rice is one of the main crops in my country. With the continuous expansion of its planting area, rice field weed damage is also increasing day by day in the expanding production, and the damage is becoming more and more serious. Whether it can effectively control the rice field weed damage and stabilize the high yield of rice has become an important issue. One of the main subjects of modern agricultural herbicide research. At present, most of the herbicides used in paddy fields have a narrow herbicidal spectrum, and cannot play a very good role on grass weeds, broad-leaved weeds and sedge weeds in the field at the same time. Generally, farmers need to apply twice or even three times....

AI Technical Summary

Problems solved by technology

The cost of this patent is relatively high, it is not easy for farmers to accept it, and it is difficult to promote, and the effect is not ideal especially for older barnyardgrass, paspalum and rice Lishihe, and the safety of fenpyramid is not good enough, and the application range is relatively narrow , some areas and some varieties are not safe to use

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