1. The first consideration in the construction of greenhouses is its durability. Of course, the durability of the greenhouse is also affected by many factors, such as the anti-aging function of the greenhouse accessories, the bearing capacity of the greenhouse skeleton, and so on. As far as the durability of light-transmitting materials is concerned, its own strength is on the one hand, and on the other hand, the light transmittance of the material gradually decreases with time, and the decrease in light transmittance will affect the service life of the light-transmitting material. Under normal circumstances, the life of a wooden structure greenhouse is generally five to ten years, and the specially designed wind and snow resistance is generally about fifteen years; while the life of the steel structure is longer, generally more than fifteen years, and the wind and snow resistance is generally more than fifteen years. The average is about twenty-five years. From this point of view, the durability of accessories and skeletons is of great significance to the greenhouse.
2. The most important thing in greenhouses in winter is insulation. Therefore, it is particularly important to improve the thermal insulation performance of the greenhouse, which can also reduce energy consumption and improve production efficiency. At this time, the selection of greenhouse materials must be more careful. The selected materials must have outstanding thermal insulation performance. The thermal insulation performance is improved, and the yield of fruits and vegetables will naturally increase.
3. The growth of crops in greenhouses is inseparable from light, and light transmittance is an important indicator of greenhouses. The light transmittance is affected by many factors, such as the light transmittance of the greenhouse covering material, the shadow rate of the main frame of the greenhouse, and the different radiation angles caused by seasonal changes. These factors affect the light transmittance of the greenhouse, which affects the growth of crops. Under normal circumstances, the light transmittance of plastic greenhouses is between 50% and 70%, glass is more than 80%, and solar greenhouses can generally reach more than 70%. With modern greenhouse film technology The light transmittance of the solar greenhouse can reach more than 80%, so the user can choose the covering material of the greenhouse according to the variety of crops grown in the greenhouse.
4. The last is the corrosion resistance of greenhouses. Greenhouses are exposed to high temperature and high humidity for a long time, so the surface is easily corroded. For example, steel structure greenhouses, which use thin-walled steel as the main body of the structure, have poor corrosion resistance. In the greenhouse, it is necessary to Hot-dip galvanized surface anti-corrosion treatment is adopted, so that the thickness reaches more than 15 to 200 microns, and the service life is almost 15 years. For bamboo and wood structure greenhouses, anti-corrosion treatment should be done once a year to ensure the normal use of the greenhouse.