A kind of mixed herbicide containing bentazone, propannil and acifluorfen and its application

Abstract

The invention belongs to the field of herbicide, and discloses a mixed herbicide containing bentazone, propanil, and acifluorfen. The invention also discloses an application of the herbicide. The herbicide contains main effective components of bentazone, propanil, and acifluorfen. A mass ratio of bentazone to propanil to acifluorfen is 0.1-80:0.1-80:0.1-80. A total mass percentage of the three effective components in the herbicide is 1% to 85%. The mixed herbicide provided by the present invention has substantial effects in the application in paddy field post-seedling weeding, and especially in the application in controlling various poaceae and broad leaf weeds in paddy fields. Compared to single recipe herbicides, with the herbicide provided by the invention, the herbicide potency is improved, the weed resistance is retarded, the herbicide spectrum is wide, the effective duration is long, and safety is brought to paddy and succeeding crops.

Description

technical field [0001] The invention belongs to the field of herbicides and relates to a mixed herbicide containing bentazone, propannil and acifluorfen and application thereof. technical background [0002] Benazone, also known as paicaodan, bentazon, chemical name: 3-isopropyl-(1H)-benzo-2,1,3-thiadiazin-4-one-2,2-dioxide thing, the structural formula is: [0003] [0004] The herbicide is a contact-type selective post-emergence herbicide, which is used for the treatment of stems and leaves at the seedling stage, and works through leaf contact. When used in dry fields, it first penetrates into the chloroplast through the leaf surface to inhibit photosynthesis. When used in paddy fields, it can penetrate through the leaves and absorb through the roots, and then transmit to the stems and leaves, which strongly hinders the photosynthesis and water metabolism of weeds, causes nutrient starvation, and causes physiological dysfunction and death. The active ingredients of b...

AI Technical Summary

Problems solved by technology

However, acifluorfen is ineffective against grass weeds and sedges, and rice has contact damage. Therefore, the dosage should be strictly controlled during use, or mixed with other herbicides to reduce phytotoxicity and improve grass damage. The Control Efficacy of Undergraduate Weeds

[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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