Rice field weeding composition and preparations therefor

Abstract

The invention relates to the pesticide preparation field, and discloses a rice field weeding composition and preparations therefor. The weeding composition is composed of azimsulfuron and benzobicylon. The weeding composition and preparations therefor take compound azimsulfuron and benzobicylon as effective constituents. Azimsulfuron and benzobicylon complement each other's advantages and have synergistic effects. The composition can delay generation of drug resistance of weeds, has synergistic effects on rice field weeds, reduces dosage and dosing frequency greatly, has advantages of safety, high efficiency, environmental protection and the like, and can be widely used for control of rice field grass damage.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a paddy field herbicidal composition and its preparation. Background technique [0002] Rice is an annual gramineous plant, which is produced on all continents except Antarctica. Rice is not only the most important food crop in my country, but also one of the main food crops in the world. The world's rice cultivation area is about 145 million hectares. The sown area of ​​rice in my country accounts for 1 / 4 of the country's grain crops. Regardless of planting area or output, rice ranks first among food crops in my country. However, rice fields in all rice-growing regions in my country have suffered from weed damage to varying degrees. Among them, the area of ​​moderate weed damage accounts for more than 46% of the total planting area of ​​rice, and the area of ​​severe weed damage accounts for more than 11.5%. These weeds compete with rice in various aspects and cause dama...

AI Technical Summary

Problems solved by technology

However, due to the long-term use of a single herbicide in paddy fields, changes in paddy field farming systems, and the introduction of new varieties, the weed community has undergone significant changes. Weeds in paddy fields spread rapidly and continue to spread, and some herbicides have been found to produce resistance

However, broad-leaved weeds such as Sagittarius japonica, Alisma, Cormina, and Yujiuhua have strong reproductive ability, fast diffusion speed, and serious damage. They have become new malignant weeds in rice fields in recent years, causing serious rice production reduction.

The rimsulfuron-methyl herbicide can no longer meet the needs of controlling broad-leaved weeds in paddy fields

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