不同灌水量对生菜生长和光合作用的影响  

Effects of Different Irrigation Quantity on the Growth and Photosynthesis of Lettuce

作　　者：裴芸[1] 别之龙[1] 杨小峰[1] 

机构地区：[1]华中农业大学园艺林学学院/园艺植物生物学教育部重点实验室,武汉430070

出　　处：《华中农业大学学报》2007年第1期98-101,共4页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金项目(30500346)资助

摘　　要：以2个生菜品种(弘农和绿领)为材料,研究了4种单株灌水定额处理(100 mL,75 mL,50 mL和25mL)对生菜生长和光合作用的影响。结果表明,随着灌水量的减少,生菜地上部的鲜重、叶面积、叶片数、叶片含水量显著降低,叶绿素含量、生菜叶片光合速率、蒸腾速率和气孔导度亦显著降低。对叶绿素荧光参数的分析表明,Fv/Fm、Fv/Fo、qP随着灌水量降低而逐渐减小,而qN则随着灌水量降低而增加。The effects of different irrigation quantity（100 mL, 75 mL, 50 mL and 25 mL per plant）on the growth and photosynthesis of two lettuce eultivars（ev. Hongnong and Lüling） were investigated. The results showed that shoot fresh weight, leaf area, leaf number and water content decreased significantly with the decrease of irrigation quantity. Leaf chlorophyll content, photosynthetic rate, transpiration rate and stomatal conductance decreased with the decrease of irrigation quantity. Fv/Fm, Fv/Fo and qP decreased whereas qN increased with the decrease of irrigation quantity.

关 键 词：亏缺灌溉 生菜 光合作用 叶绿素荧光参数 

分 类 号：S625.58[农业科学—园艺学] S636.2