In the face of rain and snow, the safety inspection of the shed should be done in advance to make the shed firm, well-sealed, and strong in heat preservation. At the same time, heat preservation measures should be added according to the conditions in the shed to ensure safe production and high yield of vegetables. Check the shed and cover to prevent rain and snow water from infiltrating At present, the walls of the greenhouse are mainly soil walls. Once the rain and snow infiltrate, it will not only reduce the temperature of the shed, but also affect the firmness of the shed over time. The rear wall of the greenhouse is in the shade, there is little light, and it melts slowly after snowing. It is recommended that vegetable farmers use non-woven fabric or cover the rear wall with corn stalks or waste insulation, add a layer of insulation layer, and then cover the film, Waterproof. For the rear roof, if the greenhouse has a long service life, it needs to be repaired in time, and the insulation materials and waterproof membranes also need to be replaced. The east and west gables will also be damaged due to frequent stepping. It is recommended that vegetable growers add a layer of non-woven fabric or other materials after replacing the new agricultural film, and then place slate or heavy objects for compaction to ensure the film Not to be damaged. Use floating film well, waterproof and melt snow At present, a layer of floating film is added to the greenhouse covering, which has multiple functions, such as heat preservation, waterproofing, windproof, etc., but in the process of use, first ensure that the floating film is fixed. Pay close attention to the weather forecast. In the evening before the rain and snow, the floating film must be laid down, which can not only strengthen the heat preservation effect of the shed, but also prevent the grass thatch or the heat preservation from being wet by rain and snow, and prolong the service life. For those using floating film rolls, it is recommended to lower the grass thatch or insulation quilt, and then lower the floating film. For artificially lower the floating film, you should first lower the grass thatch or insulation quilt for a certain distance, and then immediately lower the floating film. . After the floating film is lowered, the edges of the floating film must be compacted to prevent the floating film from being blown off or even hanging on the nearby high-voltage line. Using heavy objects (earth bags or other) to compress the real time, the number and placement density of the heavy objects can be adjusted in time according to the magnitude and direction of the wind. The second is the correct use of black and white film. At present, there is a black and white coating film on the market. One side is black and one side is white. Generally speaking, black absorbs light and the temperature rises quickly. Therefore, when covering, choose black facing outwards and white facing inward. After snowing, After the black film absorbs light, the temperature rises, which can accelerate the melting of snow and ice, which is convenient for vegetable farmers to clean the snow in time. Snow removal You must choose suitable tools for snow removal in the greenhouse. There are currently snow blowers and snow rakes, which can be used alone or simultaneously. The snow rakes can be used to remove the thicker snow. When the snow is small or the remaining thin layer of snow, you can use the snow blower to clean . The data shows that the weight of each cubic meter of new snowfall is 50-100 kilograms. A greenhouse with a span of 13 meters and a length of 50 meters (about 1 mu of land), if the thickness of the snow is 10 cm, then the weight of the entire shed is 4-6 tons. Therefore, before the heavy snow comes in winter, first strengthen the shed, especially the columnless shed, which has poor load-bearing capacity. You can increase the load-bearing capacity by adding temporary columns. Pay attention to the weather forecast and see the size of the snowfall. If the snowfall is small, you can remove the snow the next morning after the snowfall. If the snowfall lasts for a long time, it needs to be cleaned in time. If the snow cover reaches 4-5 cm, the first cleaning should be done. When sweeping snow, you should first start from the front face of the greenhouse, then remove the snow in the middle, and finally remove the snow in the uppermost part. Remember not to clean from top to bottom at one time, so as not to cause too much snow on the front face and collapse the shed. For heavy snowfall, the upper and middle layer of snow should be cleaned first to reduce most of the pressure in the shed, and then continue cleaning after the ice melts. After the snowfall, the damaged shed should be repaired in time. Pay attention to the cleaning of snow, if it encounters icing, you need to melt the ice before cleaning. For icing on the surface of the floating film caused by the melting of snow, when the amount of ice is small, the temperature can be increased on a sunny day, and the ice can melt before cleaning. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Reusable pet pads are a type of absorbent pad that can be used to
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