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How to disinfect plastic greenhouses
According to reports, plastic greenhouses generally include space disinfection, disinfection of equipment tools and soil disinfection. Space disinfection is generally performed 7-10 days before sowing or planting. 4 grams of sulfur per cubic meter, 8 grams of sawdust mixed uniformly, placed in a container to burn, the time should be carried out at 7 pm, smoked smoke closed for 24 hours. Can also be used per cubic meter with 25% chlorothalonil 1g, sawdust 8g mix, ignite smoke smoke disinfection. Scaffolds, equipment, tools, and other disinfection can be washed or sprayed with a 1:50-1:100 aqueous formalin solution. Soil disinfection should be based on the type of pests and diseases in the greenhouse soil, use pesticides, 10-15 days before planting. In the greenhouse with severe blight, 100-200 times of formalin solution can be sprayed on the surface or the surface of the ditch, and then covered with a film for 5 days. After half month, all the pesticides have been volatilized and can be sown and planted. Other diseases can be sprayed with 50% carbendazim, 50% thiophanate, or 70% of dexamethasone 1000 times, or made into toxic soil and then thrown into the soil. In greenhouses with underground pests, a certain amount of pesticides can be added to the soil.