Tungsten oxide powder (WO2) may be used for the preparation of heat insulation agricultural thin film. And the obtained agricultural film has high visible light transmittance, high infrared shielding rate and suitable ultraviolet shielding rate to achieve a certain heat insulation effect. It does not affect the light requirements of the plants in the greenhouse. In such a greenhouse, the temperature is suitable and the amount of ultraviolet light is appropriate, and thus it is advantageous for the growth of plants and the inhibition of harmful bacteria and the prevention and control of pests and diseases.
The new agricultural film can improve the heat insulation performance of common agricultural film. And the day and night temperature stability in the greenhouse equipped with agricultural film of tungsten oxide nanoparticles is much better than that of common agricultural film, which is beneficial to the growth of plants. Although the current water spray cooling method and other methods can provide a certain heat insulation ding and improve the temperature stability in the greenhouse, the structure of the greenhouse is complicated and the cost is high. While the agricultural thin film of tungsten oxide nanoparticles are relatively inexpensive.
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