Effect of La~(3+) on the leaf nitrate reductase activity(NRA) and the contents of soluble protein,soluble sugar and starch in soybean seedlings were studied under elevated ultraviolet-B radiation(UV-B,280~320nm).

• 在温室模拟增强紫外辐射UV-B(280~320nm)环境下,研究镧(La)对UV-B胁迫下大豆幼苗叶片硝酸还原酶活性(N itrate reductase activity,NRA)、可溶性蛋白、淀粉和可溶性糖含量的影响。