Transparent plastic film has a light transmittance and heat radiation rate of more than 90%. It is widely used in low temperature, heat preservation and temperature increase to improve soil temperature, maintain soil moisture, maintain soil looseness, improve soil fertility, enhance light, and suppress weeds. And can make crops reach the goal of increasing maturity. Cotton, peanuts, rice, corn, watermelon, and vegetable fields are covered with transparent plastic film.
With the development of agricultural science and technology, some transparent plastic films are directly covered on the surface, and some are in the form of greenhouses. In order to improve agricultural production, people use transparent plastic film and glass greenhouse for production. In fact, it is equivalent to the atmospheric heating process map in geography textbooks. Plants use light energy to synthesize organic matter for photosynthesis. Transparent plastic film does not absorb sunlight and can make light. Through the film, enter the greenhouse for plant utilization.
For short-wave solar radiation, transparent plastic films and glass are almost "transparent", and solar radiation can enter mostly through transparent plastic and glass. However, for long-wave radiation on the ground, plastic greenhouses and glass are not "transparent", and long-wave radiation on the ground is rarely transmitted. In this way, the greenhouse can make the external solar energy source continuously enter the room, but the indoor heat is rarely lost, so that the temperature will accumulate as a greenhouse.http://www.pe-protectionfilm.com/