Influences of elevated ultraviolet radiation(UV, broad band, 280-400 um) of thenatural solar ultraviolet radiation in Naming area on the growth, photosynthesis and development of biological yield of soy beau plants were investigated. The three levels of UV radiationintensity(0. 15, 0. 35, 0. 70, W. m-2) inhibited the growth of leaves, stems and roots, andreduced total biomass of soy beau plants. Soy beaus showed the largest biological response tothe UV radiation of 0. 70 W. m-2, while the least response was...