Herbicide prepared by binary compounding of oxyfluoyfen and prometryn and preparation method thereof

Abstract

The invention discloses herbicide prepared by binary compounding of oxyfluoyfen and prometryn and a preparation method thereof. The herbicide consists of the following components in percentage by mass: 3 to 10 percent of oxyfluoyfen, 10 to 40 percent of prometryn, 5 to 15 percent of surfactant, 6 to 20 percent of emulsifier and the balance of solvent. The preparation method comprises the following steps of: mixing and stirring the oxyfluoyfen and the solvent in percentage by mass; mixing the prometryn and the solvent, and mixing and stirring the two mixtures; adding the emulsifier and the surfactant into a reaction kettle together, and stirring the mixture for 10 to 15 minutes; adding the balance of solvent into the mixture, and stirring the mixture for 20 to 30 minutes; and performing standing, filtration, filling and sample analysis to obtain a finished product. The herbicide is an efficient broad-spectrum herbicide. The herbicide is used for pre-emergence and post-emergence after seeds of crops such as tea plants, fruit trees, grapes, tobaccos, cabbages, hot peppers, sunflowers, highland barley, soybean, melons and fruits are sowed; and 40 to 50 grams of herbicide is used in each mu, no weed in the whole growth period of the crops can be completely realized by one-time application, and the application cost of the herbicide is 32.1 to 26.5 percent lower than that of the oxyfluoyfen and the prometryn respectively.

Description

technical field

[0001] The invention relates to a herbicide and a preparation method thereof, in particular to a herbicide prepared by binary compounding of a diphenyl ether oxyfluorfen and a triazine herbicide promethonin and a preparation method thereof. Background technique

[0002] Oxyflufen is a contact herbicide that works in the presence of light. Pre-emergence and early post-emergence applications work best. Promethazine is a triazine herbicide, which is effective in controlling annual weeds in dryland crops. However, the single application of the two kinds of single doses cannot achieve no weed damage in the whole growth period of crops. Contents of the invention

[0003] The purpose of the present invention is to solve the problem that the above-mentioned herbicides cannot reach the problem of no weed damage in the whole growth period of the crops once used for one application, and provide a herbicide compounded by oxyfluorfen and promethazin binary compound an...

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