The intake and respiratory intensity of the insect pests during the high temperature period during sunny days were significantly higher than that of the cold weather during the high temperature period. At this time, the pesticides were applied and the drugs absorbed by the insects were also more, which was beneficial to the efficacy.
Appropriate increase in the amount of pesticide pest lethality is not constant, the lower the temperature at room temperature, the higher the lethal dose of pests, the winter application should be appropriate to increase the dosage, but generally not more than 1.5 times the conventional dosage. Strictly add the water according to the dilution, and you can't change the concentration of the application arbitrarily.
Prolonging the safety interval of pesticide application in winter, the drug degradation rate is slow, and the residual period in the crop body is also relatively longer. In order to ensure the quality and safety of agricultural products, we must pay attention to extending safety intervals.
When the drug solution is fully dissolved and diluted, the adhesive agent can be added, and the pesticide can be dissolved with sufficient stirring. Note that vegetable field application cannot add vegetable oil as an adhesive.
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