The main diseases of vegetables such as blight, wilt, sclerotia, damping-off, and white tinea are all soil-borne diseases. The soil is the “concentration camp†for pathogens, and is also the hiding place for pest larvae and weed seeds. . In the autumn when the nursery is being sited, effectively disinfecting seedbeds is one of the effective measures to increase the rate of seedling emergence and seedling establishment, and to cultivate strong seedlings and reduce the number of pathogens and insects.
Soil disinfection can be done by high-temperature sterilization, soilless seedling substrate steam sterilization, soil hot water disinfection, etc. Disinfection with pesticides is also a very effective method. The technical points are as follows:
The syrup poured 50ml of formalin per acre, added 3~4kg of water, spilled on the ground, covered the film for 7~10 days, and then opened the film and opened it. After the medicine had not completely evaporated, the whole soil was sown or planted. Or use formalin 100 times water solution, evenly splashed on the well-prepared ground, the amount is suitable to just drench the soil, and quickly cover the plastic film stuffy 2 to 3 days after uncovering the film, open 7 to 8 days, the whole soil Sowing or planting vegetables.
Carbendazim Disinfection Combine 50% carbendazim into 1000-fold solution, spray with 1000 kg of nutrient soil and 50-60 g of carbendazim, spray and mix well, seal with membrane for 2 to 3 days, kill Vegetable wilt and other pathogens.
Toxic soil disinfection with 50% carbendazim 10 grams of drug mix dry soil, mix well. One third of them are planted on a seedbed to be soiled before sowing, and the remaining two-thirds of the medicine soil is used as a cover soil. Then a suitable amount of water is poured on the surface of the soil so that the water is not sprayed on the water, and the water is kept moist so as not to overdo it. Harmful, too wet to reduce efficacy.
Perfuse about 10 days before sowing or planting after soil preparation. Dig a 6-cm hole every 30cm. Use a syringe to inject 30ml of aluminum chloride into each hole and close the hole with soil. The plastic film was boring for 10 days, and the soil was again soiled 2 to 3 days after the film was uncovered, and then planted or planted.
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