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Clever application: The rainy season is often the season in which crops, insects, and weeds occur in various field crops, fruit trees, and vegetables. When applying pesticides, it is necessary to pay attention to spray during periods without rain; under normal circumstances, rain occurs within 24 hours after spraying, and it is necessary to re-spray once and reduce the spray concentration appropriately.
Mixing skillfully: that is, adding an adhesive in the medicament to enhance the adhesion of the pesticide on the stems and leaves of the crop and improve the control effect; soybean powder, polyvinyl alcohol, leather glue and the like are all commonly used adhesives. Wang Yutang
Clever selection: On the one hand, we must pay attention to the use of pesticides with strong absorption, such as monocrotophos, methamidophos, phosphoamine, insecticidal fleas, leaf dry fungus, carbendazim, diureticum, thiophanate, triadimefon, Tricyclazole, fluconazole, etc. These pesticides can be rapidly transmitted to various parts of the plant after being absorbed by the stems and leaves of crops, and their efficacy is less affected by rainfall; 1605, methyl 1605, trichlorfon, anti-influenza The pesticides such as quinoxaline, diflubenzuron, monthric ester, green copper lactone, and dexamethasone, although they do not have a systemic absorption function, have strong penetration and anti-erosion properties on the surface of the crop, and are therefore suitable for use during the rainy season. Application. According to reports, when Ye Lingling is applied to crops for 2 hours, it can produce a systemic uptake effect; Phosphamidans can quickly enter the plants after application, and about 50% of the dose enters the plant tissues within 1 hour after spraying; In the second half hour after the spraying of tricyclazole, one hour after spraying, there was no effect on the efficacy. On the other hand, attention should be paid to the use of quick-acting pesticides that have strong knock-out abilities, such as anti-inhibitory, speed-killing, mixed-dioxin, methomyl, kwongwei, neovicarb, cotton boll, de-lingling, Xinguang 1 No. and pyrethroid pesticides. After the application of such pesticides, they can quickly exert their prevention and control of diseases and insect pests, so as to avoid or reduce the leaching of rainwater to pharmaceuticals. According to statistics, aphids on crops can be killed within a few minutes after application.