1. Adding coverings At night, small sheds should be placed in the greenhouses and covered with straw curtains. At night, grasses or corn stalks can be added around the greenhouse to increase the temperature by 1°C~2°C. Adding a thin layer of earthworm on top of the original grasshopper can increase the shelf temperature by 2°C~3°C. Covering the original grasshopper with a layer of film can not only block the wind, but also prevent the rain and snow from wetting the grasshopper, thereby reducing heat loss caused by evaporation of water. For the flowers that are planted in the ground, they can also be covered with plastic film. After covering, the soil temperature can be increased by more than 1°C. 2. Before the arrival of cold smoke around the fumes, the smoke is ignited around the greenhouse to prevent the heat around the greenhouse from radiating to the upper air and reduce heat loss. 3. Clean the shed film to remove the dust, dirt and snow on the shed film in time to increase the light and increase the temperature of the shed. 4. The mulching film or small arch shed is cultivated on high ridges and can be covered with a layer of mulch on high ridges, which generally can increase the ground temperature by 2°C~3°C. For cultivating flat rakes, small sheds can be erected to raise the ground temperature. 5. Dig the cold-proof ditch to dig trenches on the south side of the greenhouse, fill in horse dung, weeds, straw and other insulation materials to prevent the ground temperature from being dissipated and improve the ground temperature in the southern part of the greenhouse. 6. The double membrane covers a thin film under the drop-free membrane. Because there is air between the two membranes, the temperature inside the chamber can be significantly increased. 7. Pool insulation In the center of the greenhouse, dig a tank every few meters, cover the bottom of the pool with plastic film, then fill with clear water, and then cover the upper part of the pool with a transparent film (to prevent evaporation of water in the pool and increase the humidity of the air in the shed). . Since the specific heat of water is large, it can absorb heat (at high temperatures) at noon and release heat at night. 8. In a timely manner, when the temperature conditions permit, try to cover the late cover as soon as possible to promote the photosynthesis of flowers. In the winter season, when sunny days flood the entire shed in the morning, the weather is generally not lower than 18°C. In cloudy or cloudy conditions, the light is weak, and grasshoppers should be uncovered in time to allow scattered light to enter. On the one hand, the temperature can be increased. On the other hand, there are more blue-violet light in scattered light, which is beneficial to photosynthesis. Avoid exposing grasshoppers for a long time, resulting in a cold inside the shed and a significant drop in temperature. 9. Add fertilization material in the shed to apply horse dung, broken grass and other brewing materials, in order to increase the temperature. The decomposition of organic fertilizers can release heat. Appropriate application of organic fertilizers and phosphorus and potassium fertilizers can not only improve soil pellet structure, increase soil temperature, provide nutrients for flowers, but also enhance the antifreeze ability of flowers. 10. Hanging the reflective screen Hanging polyester aluminum film on the north side of the greenhouse can increase lighting in the shed and increase the temperature of the shed by 2°C~3°C. 11. When the heating temperature meets extremely cold weather, an additional stove or heating can be installed in the shed. However, when using the fire heating, care should be taken to prevent flower gas poisoning. The chimney should be installed to output the gas outside the shed, taking care not to ignite the shed. Firewood is warming, because the smoke emitted from the burning of grass is harmful to the flowers. 12. Scraping wood ash The wood ash is grayish black and has strong heat absorption capacity. After spreading evenly on the ground of the greenhouse, it can generally increase the ground temperature by 1°C~2°C. 13. Spraying anti-freezing substance Before cooling, spraying the stem and leaves of the plant with antifreeze 400 to 700 times can play a role in freezing and freezing. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Guangzhou Zhongzhinan Supply Chain Co.,Ltd. , https://www.zhongzhinanlighting.com
Winter greenhouse flowers how to prevent freezing