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According to the insect's mouthparts, the insects that chew on the mouthparts are selected to feed the solid foods such as the roots, stems, buds, and leaves of the crops; the pests of the sucking mouthparts mainly feed the liquid foods in the crops. According to the pest's mouthparts, the corresponding stomach poisons, contact poisons, internal absorbents and fumigant pesticides were selected for prevention and treatment. In the prevention and treatment of sucking pest insects, it is best to add penetrants in the pesticides to improve the control effect.
According to the hazard location, determine the method of use. Underground pests mainly damage the roots and ground stems of crops. They can spread pesticides to the ground, then deep-dip or cultivator to mix the medicine and soil. They can also apply pesticides near the roots, Pesticides were formulated as poisonous soil and poison baits applied to the crops for prevention and treatment. For pests that eat crop stems, buds, and leaves, the use of stomach poisons and contact pesticides can be used for spray control; for corn bran, granules can be used for heart control; for pests that consume crop juices, strong suction can be used. Pesticide spraying or smearing can also be controlled by fumigation.
According to the resistance of insect pests, due to the frequent use of a single pesticide in the production of rotation drugs, the resistance of insect pests continues to increase, and the resistance-producing adults are more resistant to offspring produced after mating. Therefore, it is necessary to implement rotation drugs, and one pesticide should be used continuously. Use no more than twice to reduce the resistance of insect pests and improve control effectiveness.
According to the characteristics of the pesticides, a mixture of two or more pesticides can be used for reasonable mixing, and then the corresponding synergist can be added to complement each Other, increase the insecticidal effect, and prevent pest resistance.
According to pollution-free requirements, the promotion of biopesticidal biopesticides has the characteristics of high efficiency, low toxicity, low residue, and resistance to insect pests. It should be promoted and applied to improve the control effect and produce pollution-free agricultural products. The use of biological pesticides should pay attention to choose cloudy days or after 4 pm, can not be sun exposure, in order to prevent spores from being destroyed, reduce control effect.
How to improve the insecticidal effect of pesticides
According to the habits of pests, some insect pests in the right time use early morning activities and some nighttime activities. According to them, the application time should be between 9-10 am and 4 pm. Because after 9:00 a.m., the dew on the surface of crops has dried up, which is the most prosperous period for sunrise pests. At this time, the use of pesticides will allow direct contact between pests and pesticides, increasing the chance of killing pests. After 4:00 pm, the sun's ultraviolet rays are weak, and the temperature is lowered. At dusk, it is a period of nocturnal insect pests. After the medication is applied, the pests are exposed to pesticides when they come out in the evening and at night, or poisoned to die during feeding.