In recent years, crop pests and diseases have been significantly aggravated, and the use of pesticides has been increasing. Many farmers have formed a fixed way in the field. However, from a scientific point of view, there are still some misunderstandings among farmers in spraying pesticides: First, the word "the" in front of the body swing spray. The disadvantage is that the medicine is sprayed in front of the body, and people are advancing in the environment where the medicine is sprayed, which is likely to cause pesticide poisoning. In addition, when spraying the closed herbicide, it is easy to spray unevenly, and the artificial film will destroy the film and reduce the control effect. The word "Z" in front of the manual sprayer should be changed to swing the side of the word "Z". When propelling sprays and spraying herbicides, parallel propulsion sprays should be used. Second, the fog spray. It will make the spray uneven, especially affecting the control effect of the contact insecticide. The mist spray is also easy to cause the loss of the liquid. When the plant is low, the waste is more serious. The sprayer with good atomization performance should be used as much as possible. The small hole spray is used, and the small mist spray is evenly sprayed. Third, the injection of "target" crops. Manual sprayers generally use direct spray, while motorized sprayers are mist type. Direct spray spray will greatly reduce work efficiency, and can not fully utilize the characteristics of motorized sprayer atomization and high work efficiency. The correct method for motorized spray operations should be 20 cm above the crop and a drift spray should be applied downwind. 4. The extent to which the liquid is sprayed onto the leaves. According to the scientific determination, when the leaves of the leaves are dropped, the amount of the liquid is only 50% of the maximum amount of sediment, which cannot maximize the efficacy and cause a large amount of pesticide waste. Therefore, spray evenly, try not to drop the liquid. Self Closing Drain Valve,Bronze Self-Closing Water Drain Valve,Jis Marine Self-Closing Drain Valve,Bronze Self-Closing Drain Valve Jiangsu Hida Marine Valve Co., Ltd , https://www.haidavalve.com