通过控制条件下，研究增强的UV原B辐射和CO2倍增对花生幼苗的影响。实验结果表明，增强UV原B辐射和CO2倍增复合处理时，花生幼苗的株高、叶片数、叶面积及干重等明显高于单独UV原B处理组，接近或略高于对照组。实验还显示，复合处理能使MDA含量减少，SOD、POD、CAT酶活性明显升高，同样略高于对照组。说明CO2倍增对花生生长的促进作用抵消了UV原B辐射的伤害作用，增强了花生抗UV原B辐射的能力。“,” Under controlled conditions, the effects of enhanced UV-B radiation and CO2 doubling on peanuts seedlings are studied in this paper. The experimental results showed that after the composite treatment of enhanced UV-B radiation and CO2 doubling the peanut plant height, leaf number, leaf area and dry weight was significantly higher than the sepa-rate UV-B treatment group, close to or slightly higher than the control; experiments also showed that with the composite treatment the MDA content reduced and the enzyme activities of SOD, POD, CAT was significantly increased, lightly higher than the control. This indicated that the promoting effect of CO2 doubling on the peanut growth offset the harmful effects of UV-B radiation, enhancing the ability of anti UV-B radiation of peanut.