【摘要】 比较了生长在植被砼上4个狗牙根(Cynodon dactylonL.)品种(Jackpot、Common、040459/680、Xin-nong No.1)的光合速率、蒸腾速率和水分利用效率。结果表明,4个品种的光合速率的差异性水平高于蒸腾速率和水分利用效率;水分利用效率由高到低的顺序是:Common(3.69)、040459/680(3.56)、Jackpot(3.31)、Xinnong No.1(3.16);光合速率、蒸腾速率、水分利用效率之间有或正或负的相关关系。更多还原

【Abstract】 The net photosynthesis rates and transpiration rates of 4 bermudagrass varieties(Jackpot,Common,040459/680 and Xinnong No.1) planted on vegetation concrete condition were measured.Their water use efficiencies(WUE) were calculated.The results indicated that the difference level of photosynthesis were higher than those of transpiration rate and water use efficiency;The water use efficiency of 4 bermudagrass varieties from high to low was:Common(3.69),040459/680(3.56),Jackpot(3.31),Xin nong No.1(3.16);There were remarkable correlation among the net photosynthesis rate,the transpiration rate and water use efficiency of 4 bermudagrass varieties.更多还原