Weeding composition for preventing and killing weeds in rice and shrimp fields and application of weeding composition

Abstract

The invention relates to a weeding composition containing triafamone and benzobicylon and application of the weeding composition in rice and shrimp fields, the weeding composition comprises triafamone and benzobicylon, the mass ratio of triafamone to benzobicylon is 1: 1-1: 80, and the weeding composition and pesticide allowable auxiliaries and / or filler are prepared into corresponding dosage forms. The weeding composition is used for preventing and removing weeds in the rice and shrimp fields, and when the weeding composition is used for preventing and removing the weeds in the rice and shrimp fields within the ratio range, the weeds have an obvious synergistic effect. By adopting the weeding composition disclosed by the invention, the comprehensive control effect on weeds in the rice and shrimp field can reach 95% or above only through once medication, two times of chemical removal are reduced compared with a conventional chemical removal formula for three times of medication prevention and control scheme, the herbicide is reduced by 70% or above, the weeding composition is safe to biological crayfish cultured in the rice and shrimp field, and the weed damage in the whole growth period of rice in the rice and shrimp field is controlled. The method solves the problems of high cost and low benefit of manual weeding in the rice and shrimp field, unsafety of chemical weeding to the crayfish, large pesticide residue and long residual period, reduces adverse effects of pesticides on the crayfish and the ecological environment, and promotes sustainable treatment of weeds in the rice and shrimp field.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a method for controlling weeds in rice and shrimp fields and a herbicidal composition for controlling weeds in rice and shrimp fields. Background technique [0002] The rice field compound planting and breeding model can efficiently use land, reduce the input of fertilizers, reduce environmental pollution, and ensure food safety. It is one of the development directions of high-efficiency and green agriculture. In recent years, the area of ​​rice-shrimp breeding in my country has been expanding significantly. The rice-shrimp breeding mode has special ecological conditions in paddy fields, and weeds have many types, large numbers, and serious damage. At present, due to the lack of systematic research on the safety of herbicides on crayfish, there is a lack of efficient and safe herbicide varieties for the control of weeds in rice-shrimp farming rice fields. At pres...

AI Technical Summary

Problems solved by technology

However, in the application process of the above-mentioned medicaments, on the one hand, the weed control effect is not good, even if it is applied multiple times (usually 3 times), it still cannot achieve the desired control effect; It is not safe for the cultured crayfish, and the repeated application of large doses brings serious pesticide residues to the crayfish

Therefore, at present, most of the farmers still rely on manual removal of weeds in rice and shrimp fields, which has low efficiency and poor benefits, which seriously restricts the popularization and application of rice and shrimp breeding models.

[0003] So far, there is no effective method that can efficiently and safely control weeds in rice and shrimp fields

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