期刊论文

中文

中南林业科技大学学报

1673-923X

2015

35

2

6-11

10.14067/j.cnki.1673-923x.2015.02.002

湖南省教育厅科学研究重点项目“野生观赏植物短梗大参引种驯化与繁育技术研究”（11A130）；

本校为第一机构

以引种栽培的短梗大参为研究对象,采用LI-6400便携式光合仪测定了短梗大参叶片的光合参数,探讨了其光合生理特性,为短梗大参引种及在园林上推广应用提供栽培基础。结果表明:短梗大参叶片净光合速率(P_n)、光合有效辐射(PAR)、大气温度(T_a)、蒸腾速率(T_r)和气孔导度(G_s)的日变化曲线均呈单峰曲线,不存在“午休”现象。相关性分析表明影响短梗大参叶片净光合速率的主要生态因子为光合有效辐射和大气温度,生理因子为气孔导度和蒸腾速率。短梗大参叶片净光合速率的年周期变化曲线呈单峰曲线,在夏季6~7月维持在较高水平,春季和秋季较低,冬季最低。短梗大参净光合速率的光响应曲线没有强光抑制现象...

The leaf photosynthetic parameters of the introduced Macropanax rosthornii were measured by LI-6400 portable photosynthesis system and its photosynthetic and physiological characteristics were investigated so that the results can provide a scientific guidance for its introduction and landscape application. The results showed that the diurnal course curves of the net photosynthetic rate, photosynthetically active radiation, air temperature, transpiration rate and stomatal conductance had peaks without ＂midday depression＂; The relativity analys...