Although strawberry has strong adaptability to temperature, long-term low temperature can cause the leaves to wither and affect the yield of fresh fruits. Generally speaking, when the temperature drops to -6~-7℃, the above-ground parts will be damaged by freezing. When the soil temperature reaches -12℃, the whole plant will freeze to death. Therefore, in areas with low winter temperatures, cold protection measures must be taken to protect as many leaves as possible over the winter so that they can continue to grow in the second year and increase fresh fruit yield. Cold protection measures mainly include the following two measures:

(1) Cover with straw, wheat straw, leaves, etc. When the surface temperature is close to 0℃, the strawberry plants should be covered with straw, wheat straw, leaves, decomposed horse manure, etc. and fertilizer, etc., and pour antifreeze water before covering to facilitate the growth of strawberries in the second spring. The covering should be tight and can be removed step by step after the soil thaws in early spring.

(2) Plastic film covering method: When the temperature continues to drop to -5℃, cover the film again. When the soil thaws and the temperature rises in the second year, the covering can be removed. When new leaves grow, poke a hole in the film to lead the plant out. The film can retain moisture and increase temperature, and can advance the maturity of strawberry fruits by about half a month. However, when the soil temperature rises above 20°C, the film should be removed, otherwise the strawberry root system will be inhibited by the rise in temperature, hindering the growth and development of the above-ground parts.