diffuse scattering film

Characteristics and application of diffuse reflection film for greenhouse covering material Characteristics and application of diffuse reflection film for greenhouse covering material-diffuse scattering film

It is also called astigmatism film, which is the process technology of selecting specific resin grades or adding astigmatism additives to general agricultural resins, so that the sunlight entering the facility through the film is converted from direct light to scattered light, thereby increasing the level of light in the facility The uniformity of vertical and vertical distribution is greatly improved, the proportion of direct light is reduced, and the lighting conditions of plants are improved.

The influence of diffuse scattering film on the environment in the greenhouse

1 Research on the physical properties of diffuse scattering films

There is no obvious difference between ordinary film (PE film) and diffuse scattering film (XS film) in terms of tensile strength, elongation at break, and mechanical properties of right-angle tearing. Diffuse scattering film (XS film) with higher haze (66.7%) It is also very good in optical performance, with a light transmittance of 91.5%.

2 Study on the spectral properties of diffuse scattering films

The ultraviolet transmittance of diffuse scattering film is between 20% and 40%, while the ultraviolet transmittance of ordinary film is between 40% and 80%, which shows that diffuse scattering film has strong ultraviolet blocking performance.

3 The influence of diffuse scattering film on the light in the greenhouse

Compared with ordinary PE film, diffuse scattering film (XS film-60) has reduced light intensity and ultraviolet intensity.

Compared with ordinary film, the attenuation amplitude of light intensity under diffuse scattering film (XS film-60) is 4%~5% (compared to the 4% light loss of greenhouse using diffuse scattering covering material from Wageningen University in the Netherlands). The research results are basically the same), the attenuation range of ultraviolet intensity is 11%~12%, and the light under the diffuse scattering film is soft and the body feels comfortable.

4 The influence of diffuse scattering film on the temperature in the greenhouse

Data monitoring found that the diffuse scattering film has a good regulating effect on the temperature in the greenhouse. The temperature in the greenhouse under the diffuse scattering film during the day is lower than that of the ordinary film, which is related to the light scattering and energy loss; the temperature in the greenhouse under the diffuse scattering film at night is higher than that of the ordinary film, which is more related to the diffuse scattering film. Infrared blocking is consistent. This shows that in the greenhouse covered with diffuse scattering film, the temperature change is relatively gentle, which is beneficial to avoid the damage of high temperature to the crops.

Application case of diffuse scattering film in facility

1 Popularization and application of diffuse scattering film on Chinese rose

The light under the diffuse scattering film can not only fully satisfy the growth of the rose, but also avoid the damage caused by the light to the rose. Therefore, diffuse scattering film has a wide range of applications in cut rose

2 Popularization and application of diffuse scattering film on cucumber

The diffuse scattering film will have a lot of room for the use of light from the middle and lower leaves of cucumber. Facts have proved that the diffuse scattering film also has a better application on cucumbers
3 Promotion and application of diffuse scattering film on tomatoes

Application of Diffuse Scattering Greenhouse Film on Tomatoes Application of Diffuse Scattering Greenhouse Film on Tomatoes
It has been verified by experiments that the diffuse scattering film also has a good promoting effect on the growth and development of tomato. Although the diffuse scattering film has a promoting effect on tomatoes, the yield and quality of tomatoes under different diffuse scattering films are different. In terms of production, the yield of tomatoes under the low-haze diffuse scattering film (XS film-57) is the highest, which is 24.89% higher than that of the ordinary film; while the tomato under the high-haze diffuse scattering film (XS film-71) is lower than the ordinary film. Reached 17.16%; in terms of quality, the tomato sugar value and chroma value under the low haze diffuse scattering film are the largest, which are 11.14% and 13.64% higher than the ordinary film respectively.
4 Promotion and application of diffuse scattering film on grapes

Different growth periods of grapes have different temperature requirements. The optimum temperature during the germination period is 10~15℃, the growth period is 20~25℃, the flowering period is 22~26℃, and the maturity period is 25~30℃.