In the process of planting grapes, due to the unreasonable use of pesticides, more and more phytotoxicity occurs. How to avoid grape phytotoxicity? What should I do if the grapes are damaged by medicine?
The first method to alleviate the phytotoxicity is to spray the phytotoxicity plant with clear water as soon as possible after spraying, and reduce the phytotoxicity by reducing the concentration of the drug. If it is pesticides, herbicides, etc. sprayed on the ground, rinse with water to remove pesticide residues in the soil. For example, the phytotoxicity caused by lime-sulfur mixture should spray 400-500 times vinegar on the basis of clean water. For phytotoxicity caused by improper use of dimethoate, spray 200 times vinegar sand liquid 1-2 times. The phytotoxicity caused by excessive use of organophosphorus and polyclusters can be sprayed with 200 times borax solution 1-2 times with 0.5-1% lime water, soapy water and other solutions.
Pay attention to the reasonable and correct use of pesticides, and try to use safe pesticides. The concentration must be applied according to the instructions, do not increase the concentration at will. Avoid medication when the temperature is too high. Do not use medication immediately after dew or rain. Wettable powder pesticides must be evenly diluted. When adding chemical fertilizers (foliar fertilizers), the chemical fertilizers must be fully dissolved before adding them to the liquid, and then spraying them evenly. At the same time, it is necessary to strengthen cultivation management, cultivate strong trees, and improve the resistance of the trees.
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