The use of dust method to control shed vegetable diseases has the advantages of labor saving, labor saving, medicine saving, no increase of humidity in the shed, and remarkable control effect. Pay attention to the following four points when doing specific operations: 1, pay attention to choose the appropriate dust agent Control cucumber downy mildew, tomato late blight, use 10% anti-mildew or 5% chlorothalonil dust; control cucumber anthracnose, black heart disease, use 5% chlorothalonil or 12% charcoal dust; control cucumber bacteria For sexual angular spot disease, use 10% B drop dust; control vegetable gray mold, leaf mold, early blight and late blight, use 12% benefit dust. 2, pay attention to choose the right duster It is advisable to use a domestic harvesting type 5 or 10 hand-cranked duster. Before the application, the greenhouse or greenhouse was closed, and then the powder was sprayed at 1 kg per acre. The pesticide was placed in the powder sprayer and the amount of powder discharged was adjusted to about 200 grams per minute. 3. Pay attention to the spraying time. In the sunny morning to afternoon, the sunlight is strong and the dust control effect is low. On sunny days, it is advisable to apply medicine in the morning or evening, and spray it on cloudy and rainy days. Applying the best after closing the shed in the evening. 4, pay attention to the spraying method Spraying on the vegetables, whether uniform or not, the effect is very poor. Only a uniform air-to-air powdering effect is good. If the powder is not evenly distributed, some of the powders will not disperse well and the control effect will be reduced. Electric Scooter Skateboard,Electric Mobility Scooter,Electric Hoverboard Simple Shower Room Co., Ltd. , http://www.chinaatvpart.com