1. Volatilization and drift of herbicide liquid droplets. During the spraying process, the highly volatile herbicide droplets are volatilized and drifted, causing damage to nearby sensitive crops and trees. Among them, 2,4-D butyl ester is the most prominent. When used in wheat fields, the droplets can drift to 100. A distance other than rice damages soybeans, sunflowers, beets, and trees. 2. Residues of the soil cause damage to the crop after the crop. Some herbicides remain in the soil for a long period of time. As a result, the crops are damaged. For example, if wheat is applied to green yellow longum and soybean is applied to Pust and chlorpyrifos, the beet and rapeseed and vegetables will be sown the following year. Victimized. 3. Injury caused by improper use of herbicides. Such as Li Gulong and other urea herbicides mixed with phosphorus ester pesticides, will seriously damage the cotton seedlings, dioscorea and dimethoate, omethoate and other mixed damage to rice. 4. The application technique is not skilled. Overlapping spray belts, nozzle leaks, etc., result in excessive local spray volume and crop damage. 5. Misuse, overuse, and improper spraying times. 6. Abnormal weather conditions. A portable or detachable lock with a pivoted or sliding shackle that can be passed through a link, ring, staple, or the like. There are many kinds of padlocks, such as key padlock, Password Padlock, Fingerprint Padlock, etc.It can also be different materials, pure copper padlock, zinc alloy, etc. Acceptable customization. Durable Brass Padlock,Control Key Lock Core,Padlocks With Control Key,Locks Keys Padlock ANDJA TRADING PET. LTD. , https://www.lock-cylinder.com