How to prevent and control herbicide damage in corn field

How to prevent and control herbicide damage in corn field? Please guide the prevention and control of herbicide damage in corn field can refer to the following methods: first, the cause of herbicide damage is relative to crop safety, only according to the requirements, rational use, crop safety. There are many reasons for the use of herbicides in corn production. The main results are as follows: 1. Improper period of medication: different growth stages of crops have different sensitivity to herbicides. Yijie and Yujingxiang corn is easy to cause drug damage when it is used in the period of 3 to 5 leaves, less than 2 leaves or more than 6 leaves. Yujingxiang can be applied in the period of 6-9 leaves of corn, but it should be sprayed directionally to avoid contact with heart leaves. 2. Improper mixing: corn treated with organophosphorus pesticides was sensitive to Yujingxiang, and the interval between them was at least 7 days. 3. The reason of weather: in the early stage of maize growth, it encountered high temperature and drought, and its growth was weak, and its resistance to herbicides decreased, so it was easy to cause drug damage. After application, it is easy to cause drug damage due to low temperature and less light, which is not conducive to the growth of corn. 4. Individual corn varieties are sensitive to pesticides: Yijie is sensitive to "Denghai" series varieties, and Yujingxiang is sensitive to "Denghai" series, sweet waxy corn and popcorn varieties, so it is forbidden to use them. 2. Remedial measures in general, corn has strong resistance to Yijie and Yujingxiang. Although there is a slight heart, leaf and leg green phenomenon when used in large dose or local concentration, it can be recovered and will not affect the yield. If the drug damage caused by improper operation or abnormal weather is serious, the following measures can be taken: 1. Spray detoxification: due to excessive herbicides, the leaves of the damaged plants should be washed with clean water for 3 times. For some herbicides that are easy to decompose in case of alkaline substances, 0.2% quicklime or 0.2% sodium carbonate water diluent can be used to wash crops to reduce the residue of foliar chemicals. 2. Strengthening field management: combined with watering, increasing the application of available fertilizer, promoting root development and regeneration, restoring the physiological function of damaged maize, promoting the healthy growth of plants, alleviating drug damage, strengthening ploughing and loosening soil, enhancing soil permeability, increasing soil temperature, enhancing the absorption capacity of roots to nutrients and water, so as to restore plant growth and development as soon as possible and reduce the loss caused by drug damage. 3. Spraying foliar fertilizer: after the occurrence of drug damage, foliar fertilizer should be sprayed in time. Generally, foliar fertilizer should be sprayed once every 5-7 days and twice in a row to restore normal growth. The available products are diluted 800 to 1000 times, such as Penwang, Shambala, Imperial doctors, etc., which can promote maize cell division, root development and restore growth. 4. Replanting or replanting in time: if the drug damage in the corn field is too heavy and the above measures still cannot be alleviated, destroy the field and replant or replant other crops in time to avoid causing greater losses. Click to get more corn planting techniques click to get more herbicide application techniques click to get more pesticide application techniques