First, the dry heat disinfection method first drying seeds when the sterilization, and then placed in a temperature of 70-73 degrees oven baking 4 days, remove the germination, can prevent tomato canker disease and virus disease. 2. Bleaching Slurry Method Add bleaching powder to the slurry. Calculate the amount of bleaching powder used per kilogram of seeds by 10-20 grams (active ingredient). The amount of mud should be exactly equal to the degree of the seed, and then mix the bleaching slurry with the seed and put it. Into the container sealed for 16 hours, can kill cabbage, cabbage, cauliflower, radish seeds on the black rot bacteria. Third, the constant temperature water soaking seeds wrapped with gauze, immersed in hot water at a temperature of 50-55 degrees for 10-15 minutes, and then rinse with hot water. Fourth, variable temperature water immersed seeds will be placed in 50 degrees hot water immersion for 10 minutes, and finally into cold water to cool. Fifth, boiled water, hot seeds, boiled seeds in boiling water, immediately rinse with cold water, so repeatedly three or four times. 6. Liquor soaking seed method: The seeds, liquor and water are weighed in a ratio of 1:0.5:0.5. The liquor and water are firstly mixed and the seeds are soaked for 10 minutes. Seven, hot water, potassium permanganate soaking seeds will be placed in 50 degrees hot water immersion for 25 minutes, then immersed in 1% formalin solution for 15 minutes, then rinse with water. 8. Formalin Seed Soaking Seed soaked in 1% formalin solution for 10 minutes, removed and placed in tightly closed containers with a damp cloth for 2-3 hours, then rinsed with fresh water. 9. Dyson ammonium soaking seed soaked with 500% solution of 50% dexamethasone for 30 minutes, washed out or directly sowing. X. Seed dressing method The seed is put into a clean container, and then added to thiram or carbendazim in an amount of 0.5% to 0.6% of the seed weight so that the powder can be evenly adhered to the surface of the seed.
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