During the winter and the lunar months, the temperature is very low, and it is not uncommon for vegetables, strawberries, flowers, nursery stocks, etc. in the greenhouse to suffer losses due to freezing injury and thus to cause the loss of production. Here are a few ways to prevent freeze damage to crops in greenhouses as follows: Covering mulching or high ridge cultivation in small sheds can cover a layer of mulch on high ridges, generally increasing the ground temperature by 1-3°C. For flat hoe cultivation, small sheds can be used to increase the temperature and the temperature inside the shed. The covering around the shed is reinforced with straw curtains made of dry straw or other straws around the shed at night, which can be increased by 1-2° C. than without coverings. In the cold weather, a layer of film is placed on top of the straw to not only block the wind, but also prevent the rain and snow from wetting the straw curtain, thereby reducing heat loss caused by evaporation of water. Prior to the arrival of the cold smoke and smoke, the smoke was ignited at the periphery of the greenhouse to prevent the heat around the greenhouse from radiating to high altitude and reduce the loss of heat. However, it must not be heated and heated in the greenhouse with firewood, because the smoke emitted from the burning of firewood is harmful to vegetables and strawberries. Scrubbing the shed film often cleans and scrubs the shed film, removes the dust and dirt on the shed film in time, and removes any snow in time to facilitate the increase of light and increase the temperature of the shed. Increased application of organic fertilizer into cow dung, pig manure and other heating materials can increase the temperature. The top-dressing of carbon dioxide and carbon dioxide can provide raw materials for photosynthesis of crops such as vegetables and strawberries, so that vegetables and strawberries can grow robustly. Carbon dioxide fertilizer can not only enhance the cold resistance of crops, increase the anti-freezing power of crops, but also promote the early crop ripening. Hanging Polyester Aluminized Reflector Screen The polyester aluminized film is hung on the north side of each crucible as a light curtain, which can add light and increase the temperature of the canopy. Divide 2-3 simple storage tanks in the middle section of each greenhouse by using the storage tank heat storage. The bottom of the tank is covered with plastic film, then filled with clear water, and then a transparent film is covered on the pool to prevent evaporation of water in the pool. Increase the air humidity in the shed. As the specific heat of water is greater, the heat absorbed at high temperatures at noon can be released at night to increase the temperature within the membrane. China Agricultural Network Editor