Pyribenzoxim-containing paddy field herbicide composition

Abstract

The invention discloses a herbicide for preventing and controlling paddy field weeds. The herbicide is a binary herbicide composition which comprises promazine sulfometuron methyl and pyribenzoxim, wherein the promazine sulfometuron methyl and the pyribenzoxim are taken as active components; the weight ratio of the promazine sulfometuron methyl and the pyribenzoxim in the binary herbicide composition is 1:10-128:5, the mass percentage of the promazine sulfometuron methyl and the pyribenzoxim accounts for 5%-80% of the compound herbicide. Compared with the independent use of a single agent, the herbicide composition disclosed by the invention can not only obviously enhance the weeding effect and enlarge the weed control spectrum, but also reduce the generation of weed drug resistance, decreases the herbicide application times, reduces the prevention and control cost, has good environmental compatibility and thus is a more ideal novel composition medicament for preventing and controlling the paddy field weeds.

Description

【Technical field】 [0001] The invention belongs to the field of pesticide preparations, and in particular relates to a herbicide composition with promethazone-methyl and saflufenacil as active ingredients, which is applied to control weeds in paddy fields. 【Background technique】 [0002] Rice is one of the main food crops in the world. Nearly half of the world's population feeds on rice, and its production covers all continents except Antarctica. However, weeds in rice fields have always been an important factor affecting rice production. Weeding in rice fields is a major problem in rice production, and chemical weeding is the main means of controlling weeds. The use of herbicides can not only save a lot of labor and improve labor productivity, but also can make a large number of weeds in the seedlings that are difficult to remove by machinery Therefore, the research and application of chemical herbicides has attracted more and more attention. The proportion of sales of chemi...

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Problems solved by technology

[0005] Through relevant literature search, it is found that there are domestic patent documents related to promasulfuron-methyl and saflufenacil, for example, Chinese patent CN103271064A discloses a herbicide composition containing promasulfuron-methyl and cyhalofop-ethyl, The composition has good control effect on broad-leaved and gramineous weeds, but poor control effect on some Cyperaceae weeds such as cow felt and heterocystis; Long compound herbicide composition, which has poor safety to crops, needs to add safener to improve safety

[0006] Both promasulfuron-methyl and saflufenacil can control grass weeds, but they have their own defects in the control of broad-leaved weeds and sedge weeds

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