1, spray water washing agent. As a result of the spraying of certain pesticides to cause phytotoxicity on the plants and leaves, it is possible to repeatedly spray large water 2-3 times, as far as possible to wash away the drugs on the surface of the plants. It is also possible to add 0.2% alkali or 0.5% lime water to the sprayed clean water. Since most pesticides are now susceptible to decomposition and loss due to alkaline substances, decomposition of the chemicals can be accelerated.
2, spray to ease the drug damage. For those drugs that cause crop damage, targeted sprays can be used to ease the drug, which can greatly reduce the damage caused by the injury. For example, omethoate, parathion, and other pesticides can cause phytotoxicity to crops. They can be sprayed with 0.2% borax solution on damaged crops; rapeseed, peanut seedlings are inhibited by paclobutrazol, and growth stagnation can be promptly applied by 0.05%. The "920" solution can quickly restore the normal growth of crops; the copper sulphate and Bordeaux mixture can cause crop damage and can be sprayed with 0.5% lime water to ease the damage.
3. Drain irrigation to reduce drug residues. For some phytotoxicity caused by herbicides, proper drainage of water can reduce drug residues. For example, the rice dwarf disease caused by Trichosanthes can be drained immediately after the initial stage, and then using gap irrigation to reduce residual pesticide residues, thereby reducing the degree of injury.
4, rapid application of available nitrogen fertilizer. The damage to foliar lesions, leaf margin scorch, or plant yellowing and other symptoms can be based on the soil fertility and the growing condition of the crop, applying 5-12 kilograms of urea per acre, and adding phosphorus and potassium fertilizers to supplement the plant nutrition. Combined with cultivating loose soil, promote root development and enhance plant resistance to drugs, the effect of seed buds and seedlings with lighter phytotoxicity is extremely obvious.
5, remove the phytotoxic parts. When fruit trees are treated with drugs such as perfusion, injection, and bandaging that are over- or over-concentrated and phytotoxicity occurs, the severed branches should be quickly cut off to prevent further conduction and infiltration of the drugs, and timely irrigation should be conducted to prevent the damage from continuing to increase. .