After entering the winter, the temperature dropped sharply, the daily sunshine time became shorter, and the warm vegetables grown in the greenhouse had been pulled. For cold-tolerant leafy vegetables, we must seize the opportunity to manage well before harvesting; During the period when vegetables are growing vigorously, we must strengthen management and do a good job in preventing cold and freezing. Pulling vegetables in autumn greenhouses and harvesting of thermophilic crops such as tomatoes, cucumbers, and peppers grown in autumn greenhouses should be timely plucked, and immature Tomato fruits can be stored in greenhouses; cooked for cold-resistant Cabbage, Spinach, Let Lettuce and other crops to do a good job of insulation and antifreeze work, at night can be covered in the surrounding area of ​​1 m high straw insulation, and timely harvest in the best commodity period. Solar greenhouse insulation analysis of the greenhouse insulation performance, take measures to protect the weak parts of insulation and cold: the rear window and exhaust fan foam board, straw curtain and other materials sealed, the entrance to install cotton curtain, greenhouse entrance with agricultural film set 5 meters long wind curtain, and timely fill cold straw into the straw, leaves and other insulation materials. In the greenhouse, a 1 meter high plastic film is placed on the surface of the roof to prevent cold, and the back slope is too thin to be covered with 2-3 layers of straw or old insulation. The rear wall should be earthed or covered with old straw to increase the temperature. Insulation, two layers of agricultural film or non-woven fabric in the shed at night. Greenhouse vegetable management For greenhouse tomatoes, cucumbers, eggplants, etc., such as autumn and winter pods and warm crops, appropriate environmental conditions such as temperature, light, and air humidity must be adjusted. In particular, light is increased, and the shed film is often scrubbed to increase the light transmittance. Timely ventilation and ventilation, strengthen pruning, pollination, fruit thinning, fruit thinning, scientific top dressing, watering, and timely management of pests and diseases, to promote robust plant growth, multi-results, and fruitful results. Cold-adapted crops such as Celery , rapeseed, and Radish should be well managed to regulate the environment, cultivating loose soil, and top-dressing and watering. After cleaning the fields and ploughing the land, the warm-tempered vegetables are harvested, and the plants and roots in the ground are retrieved early, and the harmless treatment such as high-temperature composting or ozone disinfection is concentrated. Plowing the land before freezing, in the land on the upwind, can plant overwintering root leeks or rapeseed, to prevent the formation of dust exposed to the ground, to avoid air pollution. The management of open-rooted leeks exposes overwintering root vegetables such as spinach and shallots in winter, and they should be watered and topdressed in time to promote robust plant growth and facilitate safe wintering. Watering should be the most suitable time for "night freezing and depleting" (ie, freezing ice at night and opening during the day). Jiangsu Tiankang Food Co., Ltd. , https://www.tiankangfood.com
Early winter vegetables