Spray the water, spray the water on the leaves of the plant when the phytotoxicity occurs, and spray the water 2-3 times repeatedly to decompose and dilute the drug concentration. Since most pesticides are easily decomposed and degraded by alkaline substances, alkali or lime water can be added to the sprayed water to accelerate the decomposition of the medicament.
 　 Spraying targeted relief agents, when the crops are phytotoxic, should be targeted to spray the agent that can alleviate the drug, which can greatly reduce the damage of the drug. For example, omethoate, parathion and other pesticides cause phytotoxicity to crops, and the borax solution is relieved after being damaged. Copper sulphate and Bordeaux mixture cause crop phytotoxicity and are relieved by spraying lime water.
 　 Timely application of NPK fertilizer, for the treatment of special symptoms such as yellow leaves or leaf spots, urea can be applied according to soil fertility and crop growth conditions, and phosphorus and potassium fertilizers can be added appropriately to supplement plant nutrition, and appropriate application of new high-fat membrane prevention Infected with bacteria, improve the plant's own immunity. Combined with cultivating loose soil, it promotes root development and enhances plant resistance.
 　 Injecting and other methods cause phytotoxicity. For example, when the tree body is injected, infused, etc., the phytotoxicity should be removed in time to prevent the phytotoxicity from continuing to infiltrate into other healthy parts and prevent the phytotoxicity from expanding.
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