How to control the light in greenhouses, plastic greenhouses, solar greenhouses and seedbeds?

Reasonable illumination is of great significance for the prevention and control of non-communicable diseases of plants in greenhouses, plastic greenhouses, solar greenhouses, seedbeds and other protected areas. In winter, the light is weak, and the film in the greenhouse reflects some light. In addition, the aging of the film and the adhesion of dust and water droplets affect the light transmission. Therefore, light has become a limiting factor for the growth and development of greenhouse plants (such as light-loving vegetables) in winter. In greenhouses, plastic greenhouses, solar greenhouses, seedbeds and other protected areas, light control can be carried out by selecting high-quality films, cleaning films, adding reflective curtains and artificial lighting. In winter, a transparent film with good light transmittance, dustproof, anti-aging and non-dripping should be used as the covering material, and multi-layer covering should be avoided as much as possible during the day. Clean the film frequently to increase the light transmittance. Reflective and aluminized polyester reflective curtain is hung on the south side of the operation channel of solar greenhouse to enhance the light intensity. In the continuous rain and snow weather, incandescent lamps, fluorescent lamps and biological effect lamps can also be used for artificial lighting.