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通过模拟南京地区自然光中有效紫外线Ｂ和紫外线Ａ辐射，增大辐射剂量对大豆光合作用，生长及生物量形成的影响迸行了研究。３个加强的ＵＶ辐射（０．１５，０．３５，０．７０Ｗ·ｍ－２）处理均使大豆植株矮化，抑制根、茎、叶的生长及干物质的积累。在３个ＵＶ处理中，生物效应以０．７０Ｗ·ｍ－２处理力最大，０．１５Ｗ·ｍ－２处理影响最小。ＵＶ辐射匀能使大豆叶片光合作用下降。下降幅度随ＵＶ辐射强度的增大而增大，本文还对ＵＶ影响大豆生长的可能机制进行了探讨。
The effect of radiation dose on the photosynthesis, growth and biomass formation of soybean was studied by simulating the effective UVB and UVA radiation of natural light in Nanjing. Three enhanced treatments with UV radiation (0.15,0.35,0.70W · m-2) all dwarfed soybean plants, inhibiting the growth of roots, stems and leaves and the accumulation of dry matter. Among the three UV treatments, the biological effect was the highest at 0.70W · m-2 and the lowest at 0.15W · m-2. Uniform UV radiation can reduce the photosynthesis of soybean leaves. The decreasing extent increased with the increase of UV radiation intensity. The possible mechanism of UV-induced soybean growth was also discussed.