The pesticide network prompts the farmers' friends and the two main points of pesticide spraying:
First, according to the characteristics of the climate and the law of day and night activities of pests, choose to apply the medicine at a favorable time. The time for applying the pesticide is preferably from 9:00 to 10:00 am and after 4:00 pm. Because after 9:00 am, the dew on the crop leaves has dried up, and 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 it can directly contact the pests with the pesticides, increasing the chance of poisoning the pests. After 4 pm, the light is weakened, and it is the time when the flying activities and the night-time pests are about to be dispatched. At this time, the medicine can be applied to the crop in advance to allow the pest to come into contact with the venom or feed poisoning when it comes out at dusk and at night, or to avoid poisoning loss and photolysis failure.
Second, according to the dangerous parts of the pests, choose different medicines and adopt different application methods to deliver the medicines in place. For pests that damage the roots, the pesticide is applied to the roots or applied to the seeding ditch; the pests that feed on the back of the leaves spray the liquid on the opposite side of the leaves; the control of the red bollworm and the cotton bollworm To the flower buds, the green bells and the group tips; to prevent the mites from causing the dead seedlings to smear the soil; to prevent the white spikes from spraying or pouring; to control the rice planthoppers and the rice leaf mites to spray the liquid to the base of the rice plants; Control the Spodoptera litura to spray the liquid onto the flower buds and young pods. In addition, concealed pests such as cotton aphid, red spider, rice planthopper, and rice leafhopper can be absorbed by other sucking insecticides and transmitted to other parts of the plant according to their sucking mouth feeding method. , to achieve the purpose of delivering drugs in place.
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