Strict disinfection is required before planting in winter greenhouses, which can effectively reduce the occurrence of pests and diseases, reduce the incidence of pests and diseases, reduce the number of pest control, and create conditions for the high quality and yield of vegetables. There are three main methods for disinfecting greenhouses before sowing vegetables in winter:
Thermal heat pasteurization In high temperature period, the film is affixed to the shed, and the shed is sealed tightly everywhere. The temperature in the shed is raised to 40°C~50°C or even higher (Note: the higher the temperature, the better). The high temperature is used to kill pathogens and Passivation disease, if you miss the high temperature period, you can also use the stove heating for high temperature disinfection.
Sprinkle the soil with pesticides and soak the soil in a 400 m2 greenhouse. Mix 7 kg of dimethoate and 65 % of dexamethasone, 1.2 kg each with 40 kg of wet soil. Sprinkle on the ground or combine the two pesticides to produce 300 times. Spill the soil surface and pour it deep. In the sheds that are endangered by crickets and ground tigers, 9 kg of trichlorfon 0.3 kg can be used to mix 1 kg of sauteed wheat bran into bait, which is then sprinkled on the ground to trap.
Lime Emulsion White Disinfection is made by soaking high-quality quicklime, and brushing the gables and back wall of the whitehouse can effectively kill the pathogens hidden in the wall, and can also enhance the effect of illumination in the shed.
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