Prevention and treatment of wintering seedling disease of solanaceous vegetables

Tripping disease: The diseased part is water-stained first, then turns yellow-brown and collapses into a line, the plant falls, but the stems and leaves are still green. Causes of the disease: cold and rainy, the soil moisture of the seedbed is large, the temperature is low, and the seedlings are poorly grown. Control technology: choose leeward sun, drain irrigation, build seedbed, use new bed soil; disinfect seeds before sowing; properly ventilate, control temperature and control humidity; spray 55% 猝 立 克 克 湿 湿 800 times Liquid or 50% carbendazim 1000 times liquid spray; when the rain is too much, when the humidity is too large, 50% carbendazim WP can be mixed with dry soil. Blight: The elliptical brown lesions are produced at the base of the susceptible seedlings. After expansion, the stems of the seedlings become brown and shrink and become thinner. The stems and leaves are wilting during the day, and they can return to normal in the morning and evening. They die after a few days, but they are not as easy to fall down as they are. Causes of the disease: the seeding is too dense, too much watering, and the bed is stuffy. Control technology: select the high-level, well-drained construction of seedbed; 2 to 3 weeks before sowing, 40% formaldehyde 50ml per square meter of seedbed and 6-12kg of water poured on the bed soil, closed for 4 to 5 days; In the case of strain, spray with 75% chlorothalonil 1000 times solution or 55% chlorhexidine 800 times solution; when the humidity is too large, use the above-mentioned agent to mix dry soil or apply it with appropriate amount of hay wood ash. Gray mold: The diseased part is light brown with a gray mold layer on the surface. Control methods: strengthen ventilation management, control watering, timely remove diseased bodies; timely spray 50% of carbendazim WP 600 times solution, or 50% chlorhexidine WP 1000 times, or 50% speed Kling WP 2000 times solution, spray once every 7 to 10 days, a total of 2 to 3 times.

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