It is very cold in winter. How to prevent Chinese cabbage from freezing in winter?

Before the occurrence of low-temperature freezing injury, plastic films should be laid in time and small arches should be built to keep warm. Pay attention to the weather forecast. Spray antifreeze on the blades before freezing at low temperature. The formula is that 50 grams of water, urea, potassium dihydrogen phosphate, brown sugar and amino acid water-soluble fertilizer are added every/kloc-0.5 kg, and then sprayed on the back of vegetable leaves every 5-7 days. If the north wind whistling in the daytime is a precursor to frost at night, wet straw and firewood can be piled in the fire smoke next to the vegetable field to reduce the frost degree. Vegetables in greenhouse can be covered with plastic film. In the plastic film of the greenhouse, the plastic film of the greenhouse is covered with heat preservation and cold preservation, because there is air between the greenhouse and the greenhouse, which can significantly increase the temperature in the greenhouse. In case of heavy snow, artificial shoveling can be used. If necessary, the shed can be protected with broken film to prevent damage. On the basis of freezing seeds before sowing, low temperature experiments were carried out at seedling stage to enhance the cold resistance of plants.

Planting Chinese cabbage and building a small arch shed in winter depends on the climate and terrain changes in the north and south. The climate and ground temperature in the south are good in winter, so there is no need to build a greenhouse. It is cold in the north, and the temperature difference between morning and evening is large. If you want to grow Chinese cabbage, you must build a greenhouse with a small arch shed. In southern China, you don't need an arch shed to grow Chinese cabbage in winter. The winter temperature in the south will not affect the growth of Chinese cabbage. Chinese cabbage likes to grow in winter. If it is easy to snow and frost, it is recommended to build a small arch shed.

If you choose to plant in the open air, you must take a series of cold-proof measures, otherwise it will be easily frozen. Only by raising the temperature can it grow better and effectively ensure its quality and yield.

Do you need a greenhouse to grow Chinese cabbage in winter? That depends on your geographical location and climate. I was born in the south, and we don't need a shed to grow Chinese cabbage in winter here. And straw can increase the temperature, so if you plant Chinese cabbage in winter, you must build a small arch shed and cover it with grass felt if necessary. So as to ensure the normal growth temperature of Chinese cabbage. To lay a temperature foundation for the harvest of Chinese cabbage.