Light Deprivation Greenhouse

1. Definition of black film greenhouse and white film greenhouse

Both black film and white film are agricultural covering films, which are widely used by farmers when growing vegetables and other crops in greenhouses. Black film is a black plastic film, and white film is a white plastic film.

2. The difference between black film and white film

1. Different reflectivity

Black film has strong light absorption and thermal insulation properties, and is more suitable than white film for areas with low temperatures and heavy clouds and rain. The white film has high reflectivity and is more suitable for areas with high temperature and sufficient sunshine.

2. Different light transmittances

The light transmittance of black film is low, only 10%~20%. Although it can reduce temperature fluctuations, it will also affect the growth of plants. The light transmittance of white film is slightly higher, about 30%, which is more suitable for plant growth.

3. Different protective effects

Black film can protect crops from various natural disasters such as insect damage, weed damage, wind and sand, rain, etc., while white film has poor protection and is prone to rupture in extreme weather.

4. Different heat transfer capabilities

The heat transfer ability of black film is worse, so its insulation effect is better and it is suitable for low temperature areas. The white film has better heat transfer capacity and is more suitable for high temperature areas.