How to take measures to prevent cold and frost when growing vegetables in the latest winter

Winter is a difficult time for most plants to survive. The climate and temperature in some northern areas may be very low, so planting vegetables for winter is a headache. At the same time, the same is true in the south. Vegetables are easily frozen when the cold current comes, causing unfavorable growth. So how do we do well in winter to prevent freezing injury of vegetables? The following handsome handsome to tell you about some of the corresponding methods!

1. Strengthen coverage, keep warm and freeze

We need to cover the vegetables with plastic film or straw before the arrival of the cold snap in winter to keep them warm and cold. If we plant greenhouse vegetables, we need to consolidate the supports of greenhouse vegetables and compact the film on the greenhouse. For safety reasons and the temperature in some places is not a little low, one layer of greenhouse film is far from enough. Therefore, we need to consolidate another greenhouse film inside the roc, and then buckle a layer of support inside this film. Put on a layer of film, so that the design can greatly increase the temperature inside the greenhouse, and when building, be sure to check the surrounding area again to prevent the gap from entering the cold air, so that the internal temperature is reduced. Generally, it is opened at night and covered in the morning. At noon, it will be ventilated for a while, so that the ammonia inside will be released and the toxic gas will be discharged.

2. Fertilize and cultivate soil to improve soil temperature

Choose a good weather day, pig manure or cow dung and other warm fertilizer has been decomposed to the concave soil part of the vegetable root, can improve the soil temperature, protect the root system of vegetables, its growth is very helpful, to resist the cold winter has a very good role.

3. Clean ditches to prevent damage

Generally, ditches should be repaired in the field, and they should be opened. Sometimes the ditches will be blocked, which will affect the drainage function of the field. Because a large amount of water will be formed after snow melts in the field after snow falls in winter, it can only be discharged through ditches. If the ditches are blocked, the accumulated water cannot be discharged. After snow falls, all the snow around the shed and on the shed should be cleaned up, so as to avoid snow absorbing heat from the soil to melt and reduce the temperature of the soil. To cause the temperature in the shed to plummet.

4. Control nitrogen and sprinkle ash to improve cold resistance

Don't apply nitrogen fertilizer to vegetables at seedling stage, because nitrogen fertilizer will make the cold resistance of seedlings worse, and you can buy some potassium dihydrogen phosphate, spray it on the leaves of vegetables before the cold snap comes, or sprinkle some plant ash on the surface of vegetables, which can keep warm, but also can be converted into nutrients for vegetables, but also can prevent root rot of vegetables, why not kill three birds with one stone?

5, irrigation warming, improve the temperature of the shed

Before the cold snap comes, we have to water the vegetables at one time. When the cold comes, we can warm up the vegetables. We don't have to water them repeatedly, which reduces the trouble and is in place at one time.

6. Cut off withered leaves and prevent diseases

During the winter, it is inevitable that some vegetables will be frozen, so we have to cut off the frozen spots, so as to avoid deterioration, transmission to other healthy parts, and once the vegetables are frozen, their resistance will definitely decline, so we have to put smoke agent in the shed to ignite it, so as to prevent disease.

The above is how to take cold-proof and antifreeze measures for planting vegetables in winter. Xiaobian may not write all of them here. It is also very important for the light management in the greenhouse. You can use transparent films to increase the light transmittance. If there are any deficiencies, please point out that I hope I can help you.