First, master the drug selection of pesticides 1. Choose pesticides that have strong absorbability. Such as carbendazim, thiophanate-methyl, triadimefon, sulfacin, imidacloprid, thrips, dimethyl tetrachloraz and other insecticidal, bactericidal, herbicides. After 5 hours of general application, more than 80% of the active ingredients of pesticides have been absorbed into the tissues by the crops. 2. Use quick-acting pesticides. For example, imidacloprid, enemies, pyrethroids, fast killing and other pesticides, has a strong contact killing, killing effect, strong knockdown, quickly play a role after spraying, less affected by the rain. 3. Select rain-resistant pesticides. Such as Jinggangmycin, fast-king, fast killing and other pesticides, after the application of rain, there is also a certain control effect. Second, change the method of spraying 1. Change the cream to powder. Even when the rainy or rainy gap is short, switch to powder. 2. Change the drug concentration. If it is sprayed in light rain, the water consumption may be 80% of the original, or the amount of medication may be appropriately increased to increase the concentration of the liquid medicine. 3. Change spray for poisoning soil. The systemic insecticide is mixed with fine soil and applied to the mud layer near the roots of the crops so that the roots can absorb and spread the whole plant to achieve the control effect. Third, the liquid to increase the adhesive in the amount of liquid detergent, soy flour, skin glue and other adhesives to enhance the adhesion of pesticides on the crop. 4. Applying pesticides in the rainy gap The application of pesticides in the gap is the key to prevent crop pests and diseases in the rainy season. When spraying, attention must be paid to the dynamics of the weather and rush to spray in the gap after the rain.
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