What should corn seedlings pay attention to when using herbicides?

What should corn seedlings pay attention to when using herbicides? Please introduce the chemical weeding technology in corn field with labor saving, labor saving, low input and high benefit. In recent years, the application area of post-seedling herbicides in maize producing areas in China has expanded year by year. Due to the lack of medication skills of some drug users, there are different degrees and situations of drug damage in some fields. Therefore, the application of herbicides to maize seedlings should pay attention to the following points: first, regardless of soil closure treatment or stem and leaf treatment, little watering or rainfall effect is good before applying herbicide in dry soil. Second, in strict accordance with the instructions for use, do not increase or decrease the dosage at will, do not re-spray or leak spray, so as not to produce drug damage or reduce the control effect. Third, field application should be carried out after 4 p. M. on windless and rainless days to avoid possible drug damage caused by wind, rain and abnormal high temperature. Fourth, strictly grasp the application period: the soil closure treatment should be carried out before the seedling of corn after sowing, and the treatment of stems and leaves after seedling should be at the stage of 3 ~ 5 leaves of corn (about 15 days after sowing), so as to avoid uneven unearthed of authigenic wheat seedlings and sedge before 3 leaves of corn, so as to reduce the efficacy. If the corn is more than 5 leaves, it should be applied by directional spray and lowering the sprinkler head. Do not spray the medicine on the heart leaves of corn. It is forbidden to use medicine after 7 leaves of corn. 5. The chemical weeding technology in corn field is only suitable for corn monoculture field, but not suitable for intercropping field. Sixth, after the soil is closed, people and animals are not allowed to enter the ground within 1 week, so as not to destroy the drug film and reduce the control effect. Seventh, whether closed or stem and leaf treatment, 24 hours after application should be re-sprayed in case of rain. Eighth, the use of Qingxu, Yulianchun and other post-seedling herbicides can not be mixed with any medicament, especially the use of organophosphorus pesticides within 7 days before and after application is strictly prohibited. If you need to control corn seedling pests, you can choose Tianlongbao and other non-organophosphorus pesticides. 9. The herbicide should be diluted twice, that is, the required amount of herbicide should be calculated according to the application area, a small amount of water should be added to form the mother liquid, and then the same amount of mother liquid should be added to the sprayer to stir well. When using herbicides, the sprayers should be carefully cleaned before and after application to avoid drug damage to the stubble or other crops. Click to get more corn planting techniques click to get more herbicide application techniques click to get more pesticide application techniques