Improper application of pesticides will cause phytotoxicity. These are the most common problems. Once a phytotoxicity occurs, many people will be rushed to the hospital for medical treatment, and the pesticides will be reminded that no matter what kind of phytotoxicity occurs, it can be used. The following methods are used first aid: Water spray If the phytotoxicity caused by the spraying of the leaves and the plants is early, and the liquid is not completely penetrated or absorbed into the plant, the infected plants can be quickly sprayed with a large amount of water, and sprayed 3-4 times repeatedly to try to put the plants on the surface. The medicine is rinsed off. 0.2% alkali surface or 0.5% lime water can also be added to the water of the sprayed wine. Since most of the pesticides are acidic at present, the decomposition of the alkaline substance is reduced, so that the decomposition of the medicament can be accelerated. Topdressing For example, the leaf surface has produced drug spots, leaf edge burnt or plant coking and other symptoms of phytotoxicity, and the application of urea 5-6 kg per mu can also be applied to the appropriate application of phosphorus and potassium fertilizer. Drainage water reduces drug residues For some phytotoxicity caused by poisonous soil and some herbicides , it can be properly irrigated or serially irrigated to reduce the degree of phytotoxicity. Spraying drugs that alleviate phytotoxicity For the drugs causing crop phytotoxicity, targeted spraying of the agent that can alleviate the drug can greatly reduce the damage of the phytotoxicity. For example, the paclobutrazol can spray 0.05% of the "Nine-O2" solution; the phytotoxicity of the organophosphorus pesticide It can be relieved by spraying 0.2% borax solution. Special decontamination can relieve the phytotoxicity caused by various pesticides. Remove the phytotoxicity Excessive application of the fruit trees, excessive concentration and phytotoxicity should be quickly cut off the lightly damaged branches, so as not to continue conduction and penetration, and timely irrigation, prevention and control of pesticides continue to expand. For other crops that have caused serious phytotoxicity, they should be replanted. For the application of drugs with a long residual period, the irrigation should be carried out several times, so that the residue can be infiltrated and leached below the plough layer to avoid further phytotoxicity.
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