Hubei ** News (reporter Wang Tong, correspondent Dai Zhaoyi) according to the forecast of the meteorological department, from December 14th to 16th, our province will have a strong cold air process, affected by it in the next 10 days the province will turn into low temperature and rainy weather, the temperature is a ladder sharp drop and accompanied by strong winds, of which the minimum temperature on the night of the 15th gradually dropped below 0, rain to snow in the western region. The low temperature and rainy weather lasts for a long time and has a wide range of impacts, which will affect the seedlings of eggplant vegetables in our province, the production of greenhouse vegetables in the garden and overwintering vegetables in the open field. On the 13th, the Institute of Economic Crops of the Hubei Provincial Academy of Agricultural Sciences issued the "Technical Guidance Measures for Vegetables to Cope with Low Temperature Freezing Weather", which gave specific measures for disaster prevention in major producing areas.
Greenhouse and other facilities vegetable disaster resistance measures include: repair or strengthen greenhouses. Seize the time to repair and strengthen the greenhouse skeleton and shed film, increase brackets and columns for reinforcement, increase support on the windward side, repair the damage of the shed film in time, and prevent the wind from blowing through the greenhouse film or the snow from collapsing the greenhouse. Remove snow in a timely manner. If there is snowfall, remove the snow on the shed in time, so as to clear it as it goes, improve the light transmittance of the shed film, increase the light, and increase the shed temperature. When removing the snow, avoid damaging the greenhouse film, and at the same time, remove the snow accumulated at the bottom of the greenhouse around the greenhouse, so as to prevent the snow from absorbing a lot of heat and reducing the temperature in the shed. The bottom membrane should be sealed with soil to reduce the invasion of cold air from the bottom.
Disaster resistance measures for vegetable seedlings include: multi-layer mulching to increase greenhouse temperature. Film coverage is added to the seedbed in the greenhouse, and straw curtains, non-woven fabrics, sacks and other mulches are added at the same time to keep warm and warm. Take heating measures. Nursery greenhouses with heating facilities start heating facilities in a timely manner;If there is no heating facility, you can lay the ground under the seedbed, and set up air in the small arch shed to heat and increase the temperature in the shed. Increase the light as much as possible. Set up fill lights in the shed to increase the light and increase the temperature of the shed;Try to let the seedlings receive more scattered light during the day and reduce the mulching. Reduce humidity. The watering in the seedbed is strictly controlled to avoid increasing the humidity and keep the surface of the seedbed dry. If the humidity of the seedbed is large, dry chaff, dry fine soil and plant ash can be sprinkled to achieve the purpose of reducing humidity and increasing temperature. Disease control. Seedbed diseases need to be prevented and controlled in time. In the prevention and control, try to replace the spray with powder, and also use fine dry soil mixture to sprinkle on the surface of the seedbed to reduce humidity and reduce the occurrence and spread of diseases. Ventilation after the weather clears. If the weather suddenly clears up after continuous rain or snowfall, according to the temperature and humidity in the shed, slowly remove the film to ventilate and reduce humidity, so that the temperature in the shed rises slowly and the humidity gradually decreases, so as to avoid the sharp drop in humidity that leads to the sudden loss of water and the sudden loss of water and the death of frozen seedlings, so as to promote the slow recovery of seedlings and growth. After 2-3 days, the plants will gradually adapt to the normal uncovering management. Rational application of foliar fertilizer can promote the growth of seedlings and enhance seedling resistance.
The disaster resistance measures for open-field overwintering vegetables include: harvesting and marketing in a timely manner or storing them indoors in batches for ripe open-field vegetables, such as radish, Chinese cabbage, cauliflower, broccoli, etc. For vegetables in the growing period, clean up the "three ditches" to reduce the groundwater level, especially to avoid water accumulation in the field, increase soil temperature, and promote growth. For vegetables in the growing period, spray pesticides in time to prevent diseases after the weather turns clear, and add an appropriate amount of foliar fertilizer when spraying pesticides to enhance plant resistance and promote recovery of growth.
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