林下参叶片气孔导度与环境因子的关系研究  

Research on the Relationship between the Stomatal Conductance and Environmental Factors of Ginseng under Forest

作　　者：周丽娜[1,2] 刘艳[2] 张蕾[1] 于海业[1] 

机构地区：[1]吉林大学生物与农业工程学院地面机械仿生技术教育部重点实验室,吉林长春130022 [2]吉林农业大学发展学院,吉林长春130600

出　　处：《安徽农业科学》2009年第33期16616-16618,共3页Journal of Anhui Agricultural Sciences

基　　金：吉林省科技厅重点项目资助(吉科合字第20040207-1)。

摘　　要：在分析林下参气孔导度(Gs)日变化的基础上,通过单因子相关分析初步确定各林下环境因子对Gs的作用性质。采用多元回归的方法,确定光合有效辐射(PAR)、空气温度(Ta)、水汽压亏损(VPD)是影响林下参气孔导度的主要因子,并建立了Gs与环境因子间的回归模型:Gs=4.712PAR×10-4+1.559Ta×10-2-0.002VPD-3.657,(R=0.971**,F=59.074)。Based on the diurnal change of stomatal conductance （Gs） of ginseng under forest, the qualities of the environmental factors to Gs were confirmed with correlation analysis. The interaction among factors was analysed with the method of multiple regression analysis. A conclusion was the main factors impacting on stomatal conductance （Gs） of ginseng under forest were photosynthetically active radiation （PAR）, air temperature （Ta） and vapor pressure deficit （VPD）. The relationship between stomatal conductance （Gs） of the leaf and environmental factors could be expressed as：Gs =4. 712PAR × 10^-4 ＋ 1. 559Ta × 10^-2 -0. 002VPD -3.657, （R =0. 971 ^＊ ＊ ,F =59. 074）.

关 键 词：林下参 气孔导度 环境因子 

分 类 号：S718.5[农业科学—林学]