| 摘要 |
PURPOSE:To provide a herbicidal composition having synergetically improved herbicidal effect and effective at a low rate of application, by using tetrahydro-1 H-1,2,4-triazolo-(1,2-a)-pyridazine-1,3-2H-dione derivative and paraquat as active components. CONSTITUTION:The objective herbicidal composition contains (A) 1pt.(wt.) of 2-(4-chloro-2-fluoro-5-propargyloxyphenyl)-5, 6, 7, 8-tetrahydro-1H-1, 2, 4- triazolo-(1, 2-a)-pyridazine-1, 3-2H-dione of formula I and (B) 0.1-50pts., prefer ably 0.2-40pts. of 1,1-dimethyl-4,4'-bipyridinium ion of formula II or its salt (namely, paraquat). EFFECT:The herbicidal spectrum can be expanded. |
