What should I pay attention to when planting vegetables in winter?

1. The solar greenhouse strengthens the cold insulation. The rear window and the exhaust fan port are sealed with foam board, straw curtain and other materials; the cotton curtain is installed at the door, and the windshield of 5 meters long is set at the entrance of the greenhouse; the cold weather ditch is filled into the insulation material such as straw and leaves in time. The front roof of the shed is placed on the ground with a 100 cm high agricultural film to prevent cold; the rear roof is too thin, covering 2 to 3 layers of straw curtains or old insulation is insulated; the back wall is made of soil or covered with old straw to increase thermal insulation. Two layers of agricultural film or non-woven fabric are set in the shed at night.

2. Hi-temperature vegetables increase light. For greenhouses such as tomatoes, cucumbers, eggplants, sweet peppers, etc., it is necessary to adjust the appropriate temperature and humidity, especially to increase the light. The film should be cleaned frequently, scrubbed, and reinforced.

3. Open the roots and water at the right time. Over-winter spinach, shallots, etc., wintering root leeks, etc., timely pouring frozen water and cultivating loose soil, and pouring the frozen water at the time of “night freezing and freezing” (ie, freezing at night and thinning during the day) is most suitable. After pouring the frozen water, the ploughing of the soil will be done, and the surface cracks formed by the watering will be tightened to ensure the safe wintering of the seedlings.

4. Chinese cabbage, radish, etc. in time for storage. Chinese cabbage should be harvested in time before freezing, and the head should be dried in the south for 2 to 3 days, and then refurbished and sold. The radish should be harvested before the arrival of the frost, and the conditional storage will be carried out from November 15th to 20th. The leafy vegetables such as celery and rapeseed planted in the open field should be harvested in time before and after winter to prevent freezing.

5. Cold-tolerant vegetables are sown or planted in batches. Quick-cooked leafy vegetables and root-leaved vegetables such as greenhouse lettuce, rapeseed, spinach, cherry radish, fennel, and oily wheat can be sown or planted in batches.