机构地区: 湖南环境生物职业技术学院
出 处: 《中南林学院学报》 2005年第5期45-48,共4页
摘 要: 用简单相关分析、偏相关分析、通径分析和多元逐步回归等不同方法分析四季柚净光合速率与多元相关变量间的关系, 并用多元逐步回归分析了生理生态因子间的相互关系,结果表明:多元逐步回归方法最优,通径分析次之;影响净光合速率的因子主要是气孔导度、胞间CO_2浓度、叶面水汽压亏缺和光照。 By using the methods of simple relative analysis, deflective analysis, path analysis and stepwise regression equation, a study was carried out of the relationship between the net photosynthetic rate of Siji Pomelo and its physo-ecological factors. The results are as follows: the last method is the best one and the third is better. It is stomatal condustanse to H2O (Cond), internal CO2 concentration (Ci), leaf-to-alr vapor presser deficit (Vpdl) and photosynthetically active radiation (PAR) that have affected the net photosynthetie rate. Interrelation of physo-ecological factors are also analysed with the last method.