Use problems and classification of vegetable greenhouse insulation quilt1

The weather is getting colder, and people are wearing thick clothes. At the same time, the greenhouse also put on its small padded jacket to resist the attack of this severe cold. Insulation is used as a greenhouse“cotton coat”, While raising the temperature of the greenhouse, it also contributes an important force to enrich people's dining table in winter. However, in the use of greenhouse insulation quilts, there will be some factors that affect its use. The greenhouse insulation quilt is to be beautiful, flat and easy to roll. The thermal insulation quilt is made soft because it can be attached to the uneven plastic sheet, and it is not easy to enter the wind, which can really make the thermal insulation quilt play a role in thermal insulation. The greenhouse thermal insulation quilt is made with a throw degree because it conforms to the thermal insulation principle of the greenhouse thermal insulation quilt. This is the reason why ten layers of single layer are not as good as one layer of cotton. The production method of the greenhouse thermal insulation quilt: In order to make the thermal insulation quilt soft, polished, flat, strong and durable, it is necessary to lay the produced felt first, and then go through a special flower extension machine on the felt. A thick layer of wool, and then a layer of felt on top, plus a layer of plastic cloth, Oxford cloth on the top and bottom (the front is rainproof, the back is not rainproof), and then It is made by sewing 14 threads with a special machine. Greenhouse insulation quilt production method First, the prepared felt is spread out, and the fibers are acupuncture in the middle of the greenhouse insulation blanket, which is filled with still air to form a single-layer or double-layer straw curtain that can be rolled and covered. Degree in line with the principle of thermal insulation. The inert gas in the middle is made of soft and can be pasted on the uneven plastic sheet, and the air is sewed by a special machine. In this way, the sealing performance is better, which can ensure the indoor temperature of the greenhouse insulation quilt, and the greenhouse warming agent directly affects the economic benefits of vegetable growers. Using the stitching method to make the thermal insulation quilt heavier than the composite greenhouse, it is specially used for the solar greenhouse to continue the upper layer of thick woolen velvet. The use of insulation quilts for vegetable greenhouses provides great help for the construction of greenhouses and plays a very important role. However, if you do not pay attention to its operation mode and its use process, it will cause a degree of loss, so In order to effectively avoid the occurrence of this problem, we have sorted out a few problems that should be paid attention to during use: 1. The back of the thermal insulation quilt should be kept clean, so that the plastic film has good light transmittance after the thermal insulation quilt is applied. 2. When using vegetable greenhouse insulation quilts, the amount of watering should be controlled first when managing crops. Watering and irrigation is the main reason to increase the humidity in the greenhouse. For the area covered with plastic film, the method of sub-film irrigation can be used. In winter and spring, furrow irrigation can be carried out on sunny days, or watering by ramets should be strictly controlled. To avoid excessive indoor humidity affecting the growth of plants, remember to properly ventilate and loosen the soil in time after each watering. 3. When the insulation is fixed on the upper and lower sides, it should be neat and consistent. 4. In the case of long overcast and sunny weather, it is the best remedy to choose thermal insulation materials with better moisture permeability and moisture absorption. For example, non-woven fabrics can effectively prevent dew condensation on the inner surface of the shed and prevent dew from falling on the plants. This method is also the key to reducing greenhouse humidity. 5. The two insulation quilts should be tightly connected, and the standard is to be opaque from the inside of the greenhouse. 6. Before the insulation of vegetable greenhouses is rolled up, the ground conditions should be checked to avoid being scratched by iron wires or glass on the ground. If damaged, it should be repaired in time. Common classification of greenhouse insulation quilts 1. Acrylic greenhouse greenhouse cotton insulation quilts use acrylic cotton or space cotton as the main material for cold protection, non-woven fabrics as fabrics, and are made by stitching. The thermal insulation performance of this kind of thermal insulation quilt can basically meet the requirements, but the non-woven fabric is not durable and it is not rainproof. If you switch to Oxford cloth, the cost will increase again, which is more difficult for farmers to accept. 2. Insulation felt The greenhouse insulation quilt is made of felt as the main material for cold protection. It can be placed with multiple layers of felt and plastic cloth. It is made by stitching. Rainproof effect. The thermal insulation can meet the requirements, but the disadvantage is that the service life is not long, and the PE film will generally break in 3 to 4 years. In addition, many farmers like to make their own thermal insulation quilts for greenhouses, but most farmers make thermal insulation quilts that are not waterproof on both sides. Like straw curtains, they get wet and dry quickly. Another disadvantage of homemade thermal insulation quilt is that water will enter the needle hole, so it is recommended to use a waterproof Oxford cloth on one side and a breathable Oxford cloth on the other side, so that even if a small amount of rain seeps through the needle hole, it will dry from the back. 3. The composite greenhouse insulation quilt is made of two layers of 2mm thick honeycomb plastic film, plus two layers of non-woven fabrics, and stitched with chemical fiber cloth. The insulation is lightweight and suitable for machine rolls. After a winter of use,The reflected disadvantage is that the honeycomb plastic film and non-woven fabric inside are easily broken after being rolled by mechanical transmission. Its thermal insulation properties are stronger than straw curtains, and it is suitable for use in areas where the low temperature cannot be lower than -15°C.