Select the appropriate species to use the pesticide species that have a significant effect on the control of the object, but have no effect on the crop growth, and less harmful to the natural enemy of pests, such as the anti-inhibition of wheat bran, the use of carbendazim to control scab. When several kinds of pests occur at the same time, a broad-spectrum pesticide can be used to treat multiple diseases. For example, dressing with triadimefon can control sheath blight, smut, powdery mildew, and rust. The species has good control effects on underground pests, wheat aphids, and some viral diseases. Poisonous pesticides such as 3911, carbofuran, etc. can only be used for seed dressing or soil treatment and spraying is strictly prohibited. The optimum dosage for optimal dosage is constrained by many factors such as the anti-influence of crop varieties, the degree and time of occurrence of pests and diseases, and environmental conditions. Such as the prevention and treatment of wheat rust and powdery mildew, only 3 to 5 grams of triadimefon can be used per acre for disease-resistant varieties or light, and 7-10 grams of triadimefon per acre for susceptible varieties or crops. Grasp the best period of prevention and treatment According to the control indicators of each pest, determine the appropriate period of prevention and treatment. When multiple pests and diseases are mixed, the major pests and their occurrence dynamics should be identified. Comprehensive analysis should be performed to determine the target of treatment and concurrent treatment, and to coordinate the use of drugs. For example, during the critical period of mid-late wheat selection, mixed sprays of fungicides and insecticides should be used. It can control the damage of major pests. Combining chemical prevention and control of pest resistance with other control measures or using compound preparations to alter medications may delay or prevent the occurrence of pest resistance.
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