Blue tungsten oxide may be applied for producing thermal absorption agricultural plastic film, which not only has good heat absorption effect, but also can resist high temperature in summer. And such film has excellent toughness so that it is not easily torn. Moreover, as the prepared thin film is transparent, it does not affect the day lighting of the plants in the shed. What is more important is that the agricultural film of nano grain size blue tungsten oxide has a 57% shielding rate for 380nm UV. Why is UV blocking rate important for agricultural film?
It is because most of the plants growing in the shed are more demanding on the light, that is, they do not need too strong light. If these plants are exposed to excessive ultraviolet rays, the stems will be short, the leaves will shrink, the furry will be developed, the accumulation will increase, the chlorophyll will increase, and the color will be too bright. It is very unfavorable for the growth of plants such as flowers in these greenhouses.
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