A kind of mixed herbicide containing bentazone, cyhalofop-methyl and propannil and its application

Abstract

The invention which belongs to the filed of herbicides relates to a mixed herbicide containing bentazone, cyhalofop-butyl and propanil and an application thereof. The herbicide of the invention treats bentazone, cyhalofop-butyl and propanil as main effective components, a mass ratio among bentazone, cyhalofop-butyl and propanil is 0.1-80:0.1-80:0.1-80, and above three components account for 1-85%of a total mass of the herbicide. The mixed herbicide of the invention has an application of postemergent weeding in the paddy field, and especially has a substantial effect in controlling various grassy and broadleaf weeds in the paddy field. Compared with a single dose, the mixed herbicide of the present invention allows weed resistance delay, broad weeding spectrum, and long persistent period to be realized and has security to paddy and later crops on condition that the drug effect is improved.

Description

Technical field [0001] The invention belongs to the field of herbicides and relates to a mixed herbicide containing bentazone, cyhalofop-ethyl and propanil and its application. technical background [0002] Bentazone is also known as Paicaodan and Bendazone. Chemical name: 3-isopropyl-(1H)-benzo-2,1,3-thiadiazin-4-one-2,2-dioxide, the structural formula is: [0003] [0004] This herbicide is a contact-type selective post-emergence herbicide, used for stem and leaf treatment at the seedling stage, and works through leaf contact. When used in dry fields, it first penetrates into the chloroplasts through the leaf surface to inhibit photosynthesis. When used in paddy fields, it can penetrate through the leaves and absorb through the roots, and is transmitted to the stems and leaves, which strongly hinders the photosynthesis and water metabolism of weeds, causing nutritional starvation, physiological dysfunction and death. The active ingredient of bentazone is metabolized ...

AI Technical Summary

Problems solved by technology

However, it is basically ineffective against Clover, Echinacea, and wild water chestnuts. The weeding spectrum is single, and the control of weeds is limited.

[0011] At present, herbicides in paddy fields are limited by the safety of crops, and the herbicidal spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds in paddy fields. Too long effective period, excessive dosage or uneven application will easily cause residual toxicity to current crops or subsequent crops

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