关键词: NaCl胁迫, 土壤酶, 黄瓜, 产量

Abstract: Salt-tolerant cucumber（Cucumis sativus L.）cultivar‘Jinchun No.5’and salt-sensitive cucumber cultivar‘Jinyou No.1’were used as materials．Taking NaCl（525 mg•kg-1）as salt-stress condition，the tanks are used to culture 2 different cucumber cultivars in the greenhouse．We compared the effect of growth and soil enzyme activities of these 2 different cucumbers in the root zone．The results show that the yield per plant and dry weight of salt-sensitive cucumber cultivar‘Jinyou No.1’is significantly lower than that of salt-tolerant cucumber cultivar‘Jinchun No.5’．And the leaf area of‘Jinyou No.1’after transplanting 50 d and soil dehydrogenase activity after transplanting 40 d are significantly lower than‘Jinchun No.5’．Under soil salinization condition，the inhibited urease，catalase and dehydrogenase  activity of salt-tolerant varieties‘Jinchun No.5’are lighter than that of salt-sensitive varieties‘Jinyou No.1’in rhizospher after transplanting 30 d，40 d．

Key words: Salt stress, Soil enzyme, Cucumber, Yield