After 9 o'clock in the afternoon, the dew on the leaves of the crops has dried up, and it is the time when the activities of the sunrise pests are in full swing. Applying pesticides with agricultural sprayers at this time will not affect the control effect due to dew dilution of the liquid, but also make the pests come into direct contact with the pesticides, increasing the chance of pest poisoning. After 4 p.m., when the light is weakened, it is just when the nocturnal pests are about to be dispatched. At this time, the agricultural sprayer can apply the pesticide to the crops in advance. It will die from exposure to venom or food poisoning, and at the same time, it can avoid the loss of liquid evaporation and photolysis failure.
In addition, for hidden pests such as cotton aphids, red spiders, rice planthoppers, rice leafhoppers, etc., according to their piercing-sucking mouthparts feeding method, a strong systemic insecticide can be used to absorb and spread to other parts of the plant. , to achieve the purpose of drug delivery.
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