Summer cabbage virus disease generally occurs at the seedling stage, and the heart is yellowed and wrinkled, and it can not be conceived into a ball. In the adult stage, the leaves are brittle, hard, shrinking, and unintentional, and form taupe on the leaves, affecting yield and Commodity. High temperature and drought, especially at high night temperatures, the growth of the vegetable plants is an important external condition for the onset of infection. Watering, not seedlings. Keeping the principle of Sanshui Qi Miao and Wushui Ding Miao, the water will be poured every 2~3 days, and the watering time will be divided into the best in the evening. Control nitrogen to increase phosphorus and potassium, promote strong seedling base fertilizer to apply at a time, apply 5 kg of biological potassium fertilizer, 50 kg of potassium sulfate compound fertilizer, 15-20 kg of ammonium bicarbonate. Timely treatment, elimination of the source of the drug found that the aphid immediately sprayed the drug, adding 0.3% potassium dihydrogen phosphate when spraying can improve the efficacy and enhance the disease resistance of the vegetable. It is found that the central diseased plant should be immediately removed to prevent infection, and sprayed with virus A500 times or 500-800 times of phytopathogenic solution for prevention and treatment. Medical Device Consumables,Consumables Medical Products,Disposable Medical Paper Mouthpieces,Disposable Filter Spirometer Mouthpiece Hengshui Qifei Paper Products Co. LTD , https://www.hengshuiqifei.com