环境因子对盆栽刺槐苗木生理生长变化影响的通径分析  

Path Analysis of the Impact of Environmental Factors on Growth Variation of Potted Robinia pseudocacia

作　　者：赵丽英[1] 杨建伟[1,2] 张二芹[1] 杜瑞卿[1] 

机构地区：[1]南阳师范学院生命科学院,南阳473061 [2]中国科学院水利部水土保持研究所,杨凌712100

出　　处：《林业科学》2010年第4期140-145,共6页Scientia Silvae Sinicae

基　　金：国家自然科学基金资助项目(90302005);河南省科技厅基础与前沿(082300460170)

摘　　要：刺槐（Robinnia pseudoscacia）林是黄土高原半干旱半湿润地区植被恢复和重建的人工林主要类型之一,作为一种典型的中生树种,既喜湿润肥沃又耐干旱瘠薄,In order to investigate effects of environmental factors on R. pseudocacia growth and find out the important influencing factors,we obtained data of growth of R. pseudocacia at three soil water conditions,such as favorable,medium drought and serious drought soil water condition,which hold about 70% -80% ,50% -60% and 30% -40% of field water capacity,respectively. The data was analyzed using Integrated path analysis. The results showed that environmental factors had significant integrated positive correlation with the physiological indicators of R. pseudocacia. With the increases of temperature,light and soil effective supplying water,R. pseudocacia grew vigorously. The environmental factors influence the net increase in weight of branches positively,and physiology positively,but it is not obviously. Soil effective supplying water,temperature,photosynthetic rate,transpiration rate and water use efficiency （ WUE） were important indicators. The various results obtained using the path analysis were very consistent with each other,and basically in agreement with reality. Therefore,the conclusion can be drawn：the environmental factors had significant impacts on the physiology changes of R. pseudocacia. The physiology changes of R. pseudocacia had significant impacts on the net weight of branches. The environmental factors changes of R. pseudocacia had little impact on the net weight of branches. The vector path analysis method is scientific and rational,and has to a certain degree innovation and practicality and is worthy to study and spread.

关 键 词：通径分析法 环境因子 刺槐 相关性 

分 类 号：S718.43[农业科学—林学]