Blue tungsten oxide may be applied for preparing heat insulation agricultural film. And the heat-insulating thin film obtained has good visible light transmittance with a certain ultraviolet light shielding rate. What is more important is that it does not form a partitioning environment for excessive ultraviolet rays, which is unfavorable for crop growth. That is to say, the heat-insulating film can satisfy the illumination required for plant growth, and is therefore widely used in flower greenhouses, agricultural greenhouses, and so on.
As you may have known, in addition to the appropriate temperature for the growth of crops, flowers, etc., proper ultraviolet radiation is also indispensable because it can inhibit harmful bacteria and control pests and diseases. Besides, it plays an important role in plant growth. Certainly, excessive UV light is also detrimental to plant growth. The heat insulation film of blue tungsten oxide can just create a lighting condition that is suitable for plant growth.
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