Three methods for disinfecting autumn seedbeds
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The disinfection of autumn vegetable seedbeds has the effect of raising seedlings, cultivating strong seedlings, reducing the number of worms, and reducing the environmental pollution caused by medications. High-temperature disinfection method High-temperature disinfection is a method of investing in provinces, producing no phytotoxicity, and easy for farmers to grasp. On the eve of raising seedlings, grab a sunny day and plow the seedbed into the field for 2-3 days, then level the ground and spread black and white membranes. Use the strong light and high temperature roast bed at noon for 2-3 days so that the seedbed temperature reaches 50°C and kill. Earth pests. The drug spraying method uses 72.2% Precedric 6-8 ml per square meter, or 50% Carbendazim wettable powder 8g, or carbendazim into 1000 times liquid, according to 1000 kg nutritional soil 50-60 The proportion of carbendazim was sprayed and sprayed and sealed with a membrane for 2-3 days to kill a variety of pathogens in the soil. Toxic soil method (1) After cultivating the land, 10 kg of anti-virus soil mixed with 10 kg of soil was spread in the soil per square meter of bedbed, and soil preparation was completed after half a month. (2) 50% carbendazim 10g mixed fine dry soil per square meter of seedbed, when sowing, one-third of it is used as mat soil, seeds are sandwiched in the middle, and the remaining 2/3 is used to cover seed soil, then the right amount is poured Water, so that the water does not see the water, keep the soil moist, so as to avoid excessive dry produce phytotoxicity, too wet to reduce efficacy. The above two methods are used for sterilization, and one of them may be used. The standard medication and standard operation are used. (3) For seedlings prone to lice, cockroaches and rodents, before the seedbed is filled with nutrient soil, 2.5% of trichlorfon powder, 4-5 grams of fine soil, and 0.5-1 kg of fine soil can be sprinkled into the seedbed per square meter to eliminate the underground. Pests.