1. When spraying at noon high temperature and strong light, spray chemical pesticides when the temperature is high at noon and the light is strong. First, the drug is highly volatile, which is easy to cause poisoning of pesticides; Second, most of the pests are hiding in the cool and backlit place. The spraying is not easy to hit the target. At the same time, the pesticide decomposes quickly, the volatilization loss is large, and the insect control effect is not ideal. Second, choose rain-free cloudy spray, if it is sunny, you should grab the spray at 8-10 am after sunrise or no dew after sunset at 5 pm, when the pest activity is booming. When the wind is large, the spraying should be stopped. Otherwise, the spraying will be uneven, and it will easily cause phytotoxicity. Third, when spraying pesticides in summer, attention should be paid to body protection, and pesticides should be avoided to contact with skin. Fourth, avoid increasing the concentration of liquid medicine at random, some farmers to improve work efficiency, or for enhancing the control effect, often increase the amount of pesticides, reduce the dilution factor of pesticides, and increase the concentration of liquids at will, even in the hot summer season. Due to the rapid evaporation of water at high temperatures in the hot sun, if the concentration of pesticides sprayed is too high, it is easy to cause medicinal damage to plant leaves. Fifth, the use of quick-acting pesticides, such as dichlorvos, chlorpyrifos, kelicin, octanoic acid emulsifiable concentrates such as pesticides, can kill pests 1-2 hours after use. Selecting pesticides with strong systemic properties, such as dimethoate, chlorpyrifos, and metalaxyl, 4 to 5 hours after use, more than 80% of the active ingredients can be absorbed into the internal tissues by the crop, even if it rains. Kill pests and germs. 6. Adhesives, water-based agents and wettable powders are added to water-based and wettable powder pesticides. When formulating pesticides, 100-150 g of soy flour or washing powder or two bags are added per 100 kg of liquid medicine. Jiamei Gold Point acts as a synergist to improve the use of pesticides. 7. According to the toxicity of pesticides, the safe interval of spraying should be determined. Generally, the residual period of high-toxic pesticides is more than 1 month, and the residual period of high-efficiency and low-toxic pesticides is 7-10 days. Regardless of food, oil, melon crops and fruit trees, the use of drugs should be stopped according to the regulations before harvest to prevent human and animal poisoning. More pesticide knowledge , please pay attention to China Pesticide Network Door And Window Protection,Large Surface Door Protector,Window Protector,Plastic Door And Window Protection Suzhou Surface Protective New Material Technology Co.,Ltd , https://www.surfaceprotective.com