In the outside world, the minimum temperature has fallen below 5°C, and the greenhouse has not been exposed to thermal insulation. Once the cold current is encountered again, greenhouse vegetables lacking coverings are bound to suffer freeze damage. Even when the cold weather hit, the vegetables were chilled or even frozen. After the inclement weather, the price of vegetables was rising. Others were happy to pick vegetables and sell vegetables, but their own sheds had managed to negligently reduce the output and quality, and they had to lose their income as soon as they arrived. Temperature is the basis for the growth of shed vegetables. Solanaceous vegetables, melons and other vegetables are all warm crops. The suitable growth temperature is between 20°C~30°C during the day and 15°C~20°C during the night. Once the night temperature is below 10°C, it will Cold damage occurs, which significantly affects the growth of vegetables, increases the rate of malformed flowers, and reduces the yield and quality of vegetables. Insulation is not enough, the frequency of cold damage is slow, the yield is low, and the quality is poor. It is a major problem in many vegetable production areas in the winter, and it is also a key factor affecting the benefits. To use all the resources at hand, take all necessary measures to ensure that the temperature in the greenhouse is appropriate, so as to increase the yield and efficiency of vegetables. Newly built greenhouses in recent years have better insulation, but we must pay attention to the selection and reasonable coverage of coverings to avoid affecting the insulation of greenhouses. Old sheds are relatively poor in heat insulation, especially in the use of hollow bricks and other shed walls, and the insulation performance is poor. The vegetable peasants can cover the corn stalks and insulation films on the back wall and gables, set the shed film inside the shed, and replace the insulation materials in time. In order to enhance the greenhouse insulation. Only when the temperature in the shed is high, the vegetables can grow normally, and there is room for other agricultural work. Related facilities should be inspected in advance for more than half a year of high-temperature sun, many facilities will have aging or failure, must be carried out early to ensure that the insulation facilities can be put into use before entering the winter. In the late autumn and early winter, the weather changed drastically. Once the cold weather arrives, debugging equipment may be delayed. Many vegetable farmers are afraid that the night temperature in the shed will be too high after being covered with insulation. It may delay the shed time, and even put the shed before going to bed at night. It is best not to put in half. This will cause the shed to face more heat, and the temperature difference between the front and back of the shed is large. Affects the growth of the front vegetables. Http://Content/9d745df2-c79f-48b6-8635-0c3f5f1293ca?cType=2 High Pressure Extension Tubings,high pressure PVC extension tube,Extension Tubings,extension tube medical Anesthesia Medical Co., Ltd. , https://www.medicaldiverse.com