The cruciferous vegetables in autumn mainly include Chinese cabbage, cabbage, mustard, green radish, dry radish, and white radish. The main diseases are soft rot, black rot, downy mildew, black spot, virus disease, dry Chinese cabbage heart, etc.; the main pests are cabbage caterpillar, cotton bollworm, diamondback moth, beet armyworm, rapeseed meal, tobacco powder Earthworms, Liriomyza sativae, and so on. The prevention and control technologies are described as follows: First, the selection of disease-resistant varieties such as Chinese cabbage can be used autumn green 75, Jin green 75, Jinqing 75, mid-autumn cabbage and so on. Second, the seed treatment of uncoated seeds can take the following treatment measures: 1, soaking seed soup. Expose the seeds for 3-4 hours, let them cool, pre-soak with cold water for 4-6 hours, and soak for 10-15 minutes in warm water at 55°C, and then put them in cold water to cool. 2, pharmacy soaking. Before soaking, the seeds are pre-soaked for 4-6 hours, soaked for 12 hours with 800-1000 times of green hengheng 6 (original sterilizing king); or soaked for 2 hours with 50% carbendazim 500 times; or 0.2% permanganate Potassium dip for 24 hours. Remove the seeds, rinse with water, and dry them for broadcast. This can prevent and cure a variety of fungal diseases. The prevention of bacterial diseases can be soaked with 1000 times agricultural streptomycin for 2 hours. 3, drug seed dressing. Antifungal diseases can be used 54.5% Greenheng 3, 4-5g seed dressing 1kg, or 80% green hen 2nd 3-4g seed dressing 1kg, 50% carbendazim, or 70% methyltol can also be used Bujin, or 75% chlorothalonil seed dressing, was used at 0.5% of the seed amount. Prevention of bacterial soft rot can be used Cai Fengning B1, 100 grams per acre seed dressing.

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