The present invention relates to the technical field of pesticides, particularly relates to a pyrazole compound or a salt thereof, a preparation method therefor, a herbicidal composition and use thereof. A pyrazole compound of formula (I) or a salt thereof:
wherein, R1 represents hydrogen or C1-C4 alkyl; R2 represents C1-C3 alkyl; R3 represents C1-C6 linear chain or cyclic group containing one or more heteroatoms selected from O, S, and N; R4 represents C1-C3 alkyl or halogen; R5 represents pyrazole ring or pyrazole ring substituted with one or more groups selected from alkyl, alkoxyl, halogen, halogenated alkyl, amino, and nitro. The pyrazole compound is an excellent herbicide with broad spectrum biological activity and outstanding safety for crops.
本发明涉及农药技术领域,尤其涉及一种
吡唑化合物或其盐类、其制备方法、除草组合物及其用途。一种式(I)的
吡唑化合物或其盐:
其中,R1 代表氢或 C1-C4 烷基;R2 代表 C1-C3 烷基;R3 代表含有一个或多个选自 O、S 和 N 的杂原子的 C1-C6 直链或环状基团;R4 代表 C1-C3 烷基或卤素;R5 代表
吡唑环或被一个或多个选自烷基、烷氧基、卤素、卤代烷基、
氨基和硝基的基团取代的
吡唑环。
吡唑化合物是一种优良的
除草剂,具有广谱的
生物活性,对农作物具有出色的安全性。