中文摘要：

种子萌芽，叶气体交换和幼苗生长上的 NaCl 的效果被调查。P 的萌芽。tatarinowii 种子面对 NaCl 被推迟，并且当 NaCl 集中超过了 17 公里时，显著地被禁止(1.0 g · L~(-1)) 。蒸发的导致的减小评估的 NaCltreatments，有气孔的传导力和网光合的率和他们的减小与增加 NaCl 集中是重要的。然而，在在盐应力下面的幼苗叶子的细胞间的 CO_2 集中比控制的显著地高。在 NaCl 处理，和在根，茎，和叶子的干燥增重的重要减小也在 NaCltreatments 被遵守以后，在有增加 NaCl 集中 50 天的幸存，基础直径增长和高度增长有重要减小。生物资源增长上的有害效果在茎和叶子的情况中是更明显的。从这研究的结果建议那 P。tatarinowii 对咸度应力和咸度阀值敏感因为幼苗生长可能是更少的 34 公里(2.0 g · L ~(-1)) 。

英文摘要：

Effects of NaCI on seed germination, leaf gas exchange and seedling growth were investigated. The germination of P. tatarinowii seeds was delayed in the presence of NaCl, and was significantly inhibited when NaCl concentration exceeded 17 mM （1.0 g·L^-1）. NaCl treatments induced reductions of transpiration rate, stomatal conductance and net photosynthetic rate and their reductions were significant with the increasing of NaCl concentration. However, intercellular CO2 concentration in seedling leaves under salt stress was significantly higher than that of controls. There was a significant reduction in survival, basal diameter increment and height increment witl increasing NaCl concentration 50 days after NaCl treatment, and a significant reduction in the dry weight increment of roots, stems, and leaves was also observed in the NaCl treatments. The deleterious effect on the biomass increment was more evident in the case of stems and leaves. Results from this study suggest that P. tatarinowii is sensitive to salinity stress and the salinity threshold for seedling growth might be less 34 mM （2.0 g· L^-1）.