The "starting winter" solar term is the 19th solar term for the lunar calendar. It means that it has begun to enter the winter season. The temperature has dropped sharply and it is getting colder. Every day, the sunshine duration is getting shorter. Vegetables grown in greenhouses have been shriveled. For cold-tolerant leafy vegetables, we must seize the opportunity to manage well before harvest. Autumn and winter vegetables grown in sunlight greenhouses are in a period of vigorous growth. We must strengthen management and prevent cold. Antifreeze work.

Chinese cabbage and radish

As the saying goes: "Lvdong does not cut vegetables must be harmed," must be promptly cut before freezing, heading south drying 2-3 days after the sale of trimming; conditional digging storage and then sold one after another can add value. After drying, it is protected against freezing and freezing. The roots are piled up and stored in a round heap in the outward direction. When the outside temperature falls below 0°C, they are stored in the pit. The radish shall be screwed out of the dumplings, covered with tweezers, and the thickness shall be suitable to ensure that it is free from freezing and free from heat. The storage pit shall be excavated in advance and stored in the cellar from November 15 to November 20; at the same time, the celery, rapeseed, and arable planted Vegetables, parsley and other leafy vegetables should be harvested before and after winter to prevent freezing.

Pulling and harvesting of vegetables in autumn greenhouse

Tomatoes, cucumbers, peppers, eggplants and other thermophilic crops grown in autumn greenhouses should be pulled in time, and the unripe tomato fruits can be stored in greenhouses; the cabbages, spinach, lettuce and other crops with good cold resistance should be well insulated. In anti-freezing work, the straw curtain covering a height of 1 meter is kept in the surrounding area at night and harvested in the best commodity period.

Solar greenhouse insulation

Analyze the thermal insulation performance of the greenhouse carefully, and take measures for insulation and cold protection for weak parts. After the rear window and exhaust fan with foam board, straw curtain and other materials sealed; door installation of cotton curtains, greenhouse entrance with agricultural film set 5 meters long windshield; to fill the cold trench into the straw, leaves and other insulation Materials; the front roof of the shed is covered with a 100 cm-high agricultural film to prevent cold; the overlying slope is covered with 2-3 layers of straw or old insulation; the back wall is soiled or covered with old straw to increase Insulation, two layers of agricultural film or non-woven fabrics are installed in the shed at night.

Greenhouse Vegetable Management

For greenhouses such as tomatoes, cucumbers, eggplants, sweet peppers and other autumn and winter pods and warm crops, appropriate temperature, light, air humidity and other environmental conditions should be adjusted, especially for increasing the light, the shed film should be frequently scrubbed to increase the light transmittance; To timely ventilation and ventilation, strengthen pruning, auxiliary pollination, thinning and fruit thinning, scientific top dressing, watering, timely management of pests and other management, to promote plant growth robust, multi-results, fruiting 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.

The management of open root leeks

Fresh winter ground spinach, shallots and other root leeks will be poured into the frozen water and cultivator at appropriate times. It is most appropriate to use thawing frozen water at the timing of “freezing and chilling at night” (ie, freezing in the ice at night and opening during the day).

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