Summer high temperature stuffy shed to prevent vegetable nematodes

During the summer leisure period, the greenhouse uses high-temperature dwelling water to treat the soil. Under high temperature and anaerobic conditions, combined with chemical treatment, it can effectively kill nematodes, but also can eliminate bacteria and eggs in the greenhouse and soil, and reduce soil solution concentration. Improving soil structure is therefore a multi-effect agricultural measure. This method can generally be carried out after the harvest of greenhouse vegetables in mid-June. The degree of control of root-knot nematodes is above 90%. The specific method of operation is:
1, soil disinfection. After the vegetables are harvested, the shed film should not be opened immediately, the holes should be repaired, the diseased plants in the sheds should be removed, and they should be destroyed. Avoid pests once again flow into the field and become a new source of infestation. Soil sanitizers promote the use of 2125 soil disinfectants. In the greenhouse where the soil is loam or clay, generally 1 kilogram per greenhouse is used; in the greenhouse where the nematode occurs more severely, the nematicide is used more efficiently, and generally, 2 kilograms of nematocide 0.5 kg per greenhouse is used; the production time is longer and Soil salinization is more serious in sandy loam greenhouses. Generally, 2-3 cm long crop straws of 500-l000 kg are prepared per acre, and evenly spread on the surface of greenhouses. Pesticides, bactericides and straws are deep-turned 30-40 centimeters into a sorghum or semi-high sorghum with a width of 80 centimeters wide, 30 centimeters high and 40 centimeters long.
2, high temperature stuffy shed. A large amount of water is poured into the pot to keep the water in the pot, cover with a plastic film, and then close the greenhouse vent to conduct high-temperature stuffy shed treatment to form a high-temperature anaerobic environment. Keep the ground temperature at 20 cm above 50°C for 15-20 days.
3, add nutrients. After the greenhouse is treated with high temperature, the pests in the indoor and soil are basically killed. However, after high temperature treatment, some beneficial microorganisms in the soil are also destroyed. After high-temperature stuffy sheds and before planting, 4 bottles of high-energy biological fertilizer are applied per acre in combination with site preparation to supplement beneficial microorganisms that are damaged due to high temperature.
Langfang Yongqing County Vegetable Administrative Bureau Chen Wencai 065600

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