杨树无性系蒸腾速率及其影响因子的研究  

Studies on Transpiration Rate and Its Influencing Factors of Seven Polar Clones

作　　者：陈安强[1] 房用[2] 慕宗昭[3] 马啸 杨吉华[1] 

机构地区：[1]山东农业大学林学院水土保持系,山东泰安271018 [2]山东省林业科学研究院,济南250014 [3]山东省林业引用外资项目办公室,济南250014 [4]山东省阳谷县林业局,山东阳谷252300

出　　处：《水土保持研究》2008年第4期157-160,164,共5页Research of Soil and Water Conservation

基　　金：世界银行贷款资助项目“杨树优质种质光合、蒸腾和生理水分研究”

摘　　要：对山东省高密市栽植的7个杨树无性系的蒸腾速率及其影响因子进行了研究,结果表明:7个杨树无性系的气孔导度与蒸腾速率变化趋势基本一致,白天变化趋势均成单峰型,7个杨树无性系的最大蒸腾速率大小顺序为:I-107>NL95>L35>L323>中林46>中天杨>NL895,白天测定时段的平均蒸腾速率大小顺序为:I-107>L35>NL95>L323>中林46>中天杨>NL895,蒸腾速率与气孔导度的相关性最显著,气孔导度和蒸腾速率与各影响因子呈很好的多元线性函数关系,7个杨树无性系的蒸腾速率与树高、胸径和单株材积呈正相关关系。The transpiration rate with their influencing factors was studied based on the observation and research of the samples selected from 7 varieties of poplar clones induced in Gaomi city in Shandong province.The results show that general daily changing tendency of 7 poplar clones is generally unanimous with single-apex curve.In addition,changing tendency of transpiration rates is just the same as that of the stomatal conductance.The daily the biggest transpiration rates are of the following order,TrI-107〉Tr NL95〉Tr L35〉Tr L323〉Trzhonglin46〉Trzhongtianyang〉Tr NL895,The daily average transpiration rates are of the following order,Tr I-107〉Tr L35〉Tr NL95〉Tr L323〉Trzhonglin46〉Trzhongtianyang〉Tr NL895.The mutuality between transpiration rate and stomatal conductance is the most prominent.The relationship between stomatal conductance and transpiration rate with their influencing factors are multivariate linear function,transpiration rates of 7 poplar clones have positive correlation with the H,D and V.

关 键 词：杨树无性系 气孔导度 蒸腾速率 影响因子 单株材积 

分 类 号：S715.4[农业科学—林学]