Mr. Wu from Jiangxi asked: How to choose a shed film? Shanghai Agricultural Machinery Technology Promotion Center A: Selecting a shed film to take into account the local climatic conditions and crops planted, a reasonable choice of shed film can not only reduce costs, but also increase production and increase income. At present, there are many types of film in the market, classified according to the functional characteristics of the film, can be divided into: ordinary film, longevity film, no drip film, light film, composite film. The average photo-thermal performance of the film is poor, light transmittance is about 70%, no drip, and the dust is easily accumulated on the shed. The service life is 120-150 days. The use cost is high but the benefit is low. It is recommended not to purchase it. The longevity film overcomes the shortcomings of the common film, which is not resistant to high temperature and sunlight, and does not resist aging. It can be used continuously for more than two years and the cost is low. However, attention should be paid to reducing the film area dust and maintaining the film surface clean. Drop-free film is an anti-aging agent and non-dripping surfactant added to the common film. It can be used for more than 2 years. It has low cost. Due to its drip, it can reduce the air humidity in the shed and reduce the occurrence of early spring diseases and insect pests. Transmittance, so the temperature and light performance is good, increase production and income significantly, suitable for a variety of shed type use. The light-transmitting film is made of low-density polyethylene resin and added with a light converting agent and blow molded. It has the characteristics of longevity, aging resistance, and good light transmittance. It can be used for more than 2 years, and the light transmittance is over 85%. It is weak. The effect of increasing temperature under light is not significant. It is mainly used for hi-temperature and hi-light crops. Multi-functional film is a variety of additives in the ordinary film, so that the film has a long life, insulation, anti-drip and other functions. According to the climatic characteristics and input costs of your region, it is more suitable to use non-drop film.
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