Disease control of pollution-free muskmelon

1 physical control set up yellow board to trap and kill whitefly and aphids. Apply yellow paint on 100cm x 20cm cardboard, then apply another layer of oil, hang 30x 40 pieces per mu, and reapply another layer of oil when the board is covered with whitefly and aphids. Control aphids with tobacco aphid cocoon wasp or seven-star lady beetle. Wuyisin or "Nongkang 120" 200-fold solution was sprayed once every 10 days for 3 times in a row, which could prevent many diseases. Diseased plants and leaves were found to be burned or buried in time, and disinfected with lime. The virus disease can be prevented by spraying NS-83 100x solution once before planting and 2 times or 3 times during the growing period. The invasion of powdery mildew could be prevented by spraying 27% high ester film 70% 140 times on the leaf surface once every 10 days for 2 times. 3000 times solution of 1.8% avermectin EC was used to control whitefly and red spider. (2) Dust method and fumigation method are preferred in chemical control and protection areas, and spray control can also be used in dry and sunny weather. Attention should be paid to the rotation of drugs and reasonable mixed use. Powdery mildew. Spray with 2000 times of 20% trimethoprim EC or 15% trimethoprim wettable powder 1000-1500 times, once every 15-20 days. Downy mildew. Use 45% chlorothalonil smoke remover 110: 180 grams per mu, put it in 5: 6 places, light the shed for the night in the evening, smoke once every 7 days, and smoke 3 times in a row. Spray 1 kg per mu with 5% chlorothalonil dust or 5% chlorothalonil dust every 6 to 7 days for 3 times in a row. Spray 72% Kloe wettable powder 800 times, or 40% ethyl phosphate aluminum wettable powder 250 times 300 times, or 75% chlorothalonil 600 times liquid spray. Vine blight. Spray with 70% mancozeb wettable powder 500 times or 75% chlorothalonil 600 times. Sclerotinia disease. Prevention and control of downy mildew by dust method. Use 20% Sukeling smoke 100g / mu and put it in 5 / 6 places, light it in the evening, close the shed for the night, smoke once every 7 days, three times in a row. Spray with 50% Sukeling wettable powder 1500-2000 times, or 50% Prohydantoin 1500 times. Anthrax. Control of Sclerotinia sclerotiorum by smoking. Prevention and control of downy mildew by dust method. Spray 80% anthrax Fumei wettable powder 800 times, or 70% mancozeb 500 times, or 2% "Nongkang 120" 200 times, or 50% carbendazim wettable powder 500 times 700 times, once every 7 days, 2 times 3 times. A plague. Spray 72% Kelou wettable powder 800 times, or 72% gram Kangling wettable powder 800 times, or 64% germicidal alum M8 400 times 500 times, or 75% chlorothalonil wettable powder 600 times liquid spray, 7 times every 10 days, 2 times 4 times. Fusarium wilt. The root was irrigated with 350 times solution of 60% ethyl phosphate aluminum wettable powder, 100 ml per plant, once every 10 days, and 2 times for prevention. Bacterial leaf blight. Prevention and control of downy mildew by dust method. Spray 72% of agricultural streptomycin sulfate soluble powder or neophytomycin 4000 × 5000 times. Bacterial angular spot. Spray with 50% copper succinate wettable powder 500 times, or 60% ethyl aluminum phosphate wettable powder 500 times, or 50% thiram wettable powder 500 times, or 72% agricultural streptomycin sulfate or neophytomycin 4000 × 5000 times. 77% can kill wettable powder 600 times 800 times liquid spray. Viral disease. Spray 20% virus A wettable powder 500x, or 15% Zhishiling emulsion 1000 times, or antifungal agent No. 1 300x spray, once every 10 days, for 4 times in a row. Huang Shougua. Spray with 1000 times of 4.5% efficient hydrogen chloride, or irrigate roots with 1500 times of 50% phoxim EC and 1500 times of 90% trichlorfon crystals.