A: Both 2-chloro-4-chloropyrroacetic acid (2,4-chlorophenyl) and chlorofluoropyrroacetic acid (HCFC) have certain control effects on the seedlings of wild Geranium in the green stem stage. 2 A 4 chlorine is less safe for wheat seedlings and must be used during the 4-leaf period until the jointing of the wheat seedlings, and it cannot be used to increase the amount of the drug blindly. Fluroxypyr is safe for wheat, and it has a wide application period and is suitable for early use of medicine. It can also spray more medicine on more grassy areas. Spray some medicine) to improve the control effect of wild geranium.
At present, from the point of view of production applications, Fometrione of the Fumei Company, Dow Chemical Co., Ltd. of Dow AgroSciences and other drugs against barnyardgrass in the wheat fields have good control effects and can be selected according to local conditions.