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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 am 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 the most popular. 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 sun is westward, the light is weakened, the temperature is lowered, and it is the time when the flying activities and the night-time pests are about to be dispatched at dusk. At this time, the medicine can be applied to the crops in advance, and the pests are It can be exposed to venom or feeding poisoning when it comes out at dusk or at night, and it can also avoid evaporation loss and photolysis failure.
Second, according to the pest's hazardous parts, choose different medicines and adopt different application methods to deliver medicines in place. For pests that harm 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 are sprayed 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. Only when the insects are applied and the medicine is delivered in place, can we grasp the weaknesses, hit the key points, and achieve the effect of removing the medicine to the insects, so that the medicine can play the best role and obtain the ideal insecticidal effect.
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Use pesticides to choose time and location
The use of pesticides to control crop pests, in order to achieve the best insecticidal effect, in addition to the selection of the right medicine, appropriate medication, should also pay special attention to the time and location of medication.
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