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《Journal of Beijing Technology and Business University (Natural Science Edition)》 2003-03
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DETERMINATION AND ANALYSIS OF LIGHT CONVERSION AGRICULTURAL FILMS

ZHANG Song-pei (College of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing 100037, China)  
spectrum properties of light conversion agricultural films about transmittance, radiant intensity quantum current density were determined and analyzed, and spectra distribution of sunlight and transmissible light through the film were given. Analyses show that addition of conversion light agent makes the increasing of transmittance 1. 39%-1. 75%, and decreasing of ultraviolet light and green light, enhancement of radiant intensity of red light 4.69%; The conversion value of red light in 620 nm is increased about 2. 0%-6- 9%, the ultraviolet light in 340 nm is decreased about -0. 5%'--2. 7%. The spectrum distribution of nature light is not uniform, orange red in 600-660 nm is abundant and 29. 16% in rate of visible light and green percent is 23. 11% ?whereas ultraviolet percent is 0. 27% in range of 300--1 100 nm sunlight.
【Fund】: 北京市自然科学基金(2992008)
【CateGory Index】: O657.3;TQ320.721
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