Spraying insecticide to master two points

First, according to the characteristics of the climate and the law of day and night activities of pests, choose to apply the drug in a favorable period of time. The application time is preferably from 9 to 10 am and after 4 pm. Because the dew on the crop leaves has dried up between 9 and 10 am, it is the time when the sunrise pest activity is most active. At this time, the application of the drug will not affect the control effect due to the dew dilution of the liquid, and the pest can be directly contacted with the pesticide to increase the chance of poisoning the pest. After 4 pm, the light is weakened, which is when the insects fly and the night-time pests are about to be dispatched. At this time, the medicine can be applied to the crop in advance, and the pests are exposed to venom or feeding poisoning when they come out at dusk and at night, or when eating, and the evaporation loss and photolysis failure of the liquid can be avoided.

Second, according to the hazardous parts of the pests, different agents should be used, and different methods of application should be used to deliver the drugs in place. For pests that endanger the roots, the liquid should be applied to the roots or applied to the seeding ditch; for the pests that feed on the back of the leaves, the liquid should be sprayed on the opposite side of the leaves; the control of red bollworms and cotton bollworms should be Spray the liquid onto the flower buds, the green bells and the group tips; to prevent the dead seedlings caused by the mites, the pesticide should be made into toxic soil; the white ear should be controlled, the liquid should be sprayed or poured; In the rice leafhopper, the liquid should be sprayed on the base of the rice plant; for the control of Spodoptera litura, the liquid should be sprayed onto the flower buds and young pods. In addition, for the concealed pests such as cotton aphid, red spider, rice planthopper, and rice leafhopper, according to the sucking mouth mouth feeding method, a systemic strong insecticide can be selected, and the liquid can be absorbed after being absorbed. Go to Other parts of the plant and achieve the purpose of delivering the drug in place.
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