Technical measures for weeding in wheat field

First, choose the right herbicide. In wheat fields dominated by Monocotyledon weeds, herbicides such as Puma, Golden Horse and Shima can be selected. In wheat fields dominated by dicotyledonous broad-leaved weeds, herbicides such as benzosulfuron, thiophenesulfuron, 2mai 4muryl D butyl ester and so on can be selected. Monocotyledon and dicotyledonous mixed wheat fields can be mixed with superstar or benzenesulfuron plus Poma.

Second, the best period of medication. Chemical weeding in spring wheat field starts from returning to green stage to the end of jointing stage, spraying too early, low temperature is not good, spraying too late and high temperature will cause drug damage to wheat seedlings, and will cause drug damage to the next crop.

Third, it is necessary to master the temperature and humidity when using drugs. The time to start medication requires a daily average temperature of more than 10 ℃, and from 10:00 to 3 p.m. on a sunny day. If the soil is dry, pour back green water before spraying herbicide.

Fourth, it is necessary to strictly grasp the dosage and the preparation method of the liquid. The dosage should be strictly controlled, and the dosage should not be reduced or increased at will, so as not to reduce the effect of prevention and control or produce drug damage. To prepare the solution, we should use the secondary dilution method, first prepare the original drug into the mother liquid, properly add water to the sprayer, then pour in the right amount of mother liquid, and finally add clear water to mix evenly. The water consumption per mu is not less than 30 kg.

Fifth, it is necessary to master the correct use method. Spray should be uniform and thoughtful, try to wet the stems and leaves of weeds, and do not re-spray, do not leak spray. When spraying, it is strictly forbidden to spray on windy days, especially 2mem4murD butyl ester, to prevent the liquid from drifting and cause drug damage to other crops. The sprayer should be cleaned strictly after use, especially 2pj4murD butyl ester, soaked in 3% ferrous sulfate for 24 hours, and remove all the switches, sprinklers and spray belts, and rinse well so as to avoid drug damage to other crops when they are used again.

Li Shurong