文献类型：期刊文献

中文题名：乌兰布和沙漠小叶杨与胡杨杂交种(小×胡杨)比叶面积与水分利用效率的关系

英文题名：Relationship between specific leaf area and water use efficiency of strain Populus simonii×P.euphratica in Ulanbuh desert

作者：马迎宾[1] 黄雅茹[1] 赵英铭[1] 迟悦春[2] 莎仁图雅[3] 郭跃[4]

第一作者：马迎宾

机构：[1]内蒙古磴口荒漠生态系统国家定位观测研究站/中国林业科学研究院沙漠林业实验中心,磴口015200;[2]鄂尔多斯市林业和草原局,鄂尔多斯017000;[3]内蒙古自治区林业科学研究院,呼和浩特010010;[4]鄂尔多斯市林业和草原事业发展中心,鄂尔多斯017010

年份：2021

卷号：35

期号：12

起止页码：150-155

中文期刊名：干旱区资源与环境

外文期刊名：Journal of Arid Land Resources and Environment

收录：北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；CSSCI:【CSSCI2021_2022】；

基金：中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2021MA005);国家自然科学基金项目(32001374)资助。

语种：中文

中文关键词：光合特性;比叶面积;水分利用效率;小×胡杨;乌兰布和沙漠

外文关键词：photosynthetic characteristics;specific leaf area;water use efficiency;strain of Populus simonii×P.euphratica;Ulanbuh desert

分类号：Q945

摘要：利用Li-6400xt便携式光合仪测定了不同栽植年限小×胡杨的光合特性,同时测定了叶面积、叶干重,分析了不同栽植年限小×胡杨比叶面积(SLA)和水分利用效率(WUE)的关系。结果表明:不同栽植年限的小×胡杨净光合速率、蒸腾速率、水分利用效率趋势一致,均为单峰型。不同栽植年限小×胡杨叶干重、叶面积、比叶面积存在显著差异(P﹤0.05)。2年小×胡杨叶干重、叶面积最大。1年、2年、3年小×胡杨叶片比叶面积与水分利用效率呈显著负相关关系。随着小×胡杨栽植年限的增加,比叶面积逐渐增大,水分利用效率逐渐减小,比叶面积与水分利用效率呈显著负相关关系(P﹤0.05)。
The photosynthetic characteristics of strain Populus simonii×P.euphratica at different ages were determined by Li-6400 xt portable photosynthetic apparatus.At the same time,the leaf area and the dry weight of the leaves were measured.The relationship between different ages of strain Populus simonii×P.euphratica specific leaf area(SLA)and water use efficiency(WUE)was analyzed.The results shows the net photosynthetic rate,transpiration rate and water use efficiency of the strain at different ages were consistent,all of which were unimodal.There were significant differences in dry weight,leaf area and specific leaf area of the strain(P<0.05).Dry leaf weight and leaf area of 2-year-old tree were the largest.There was a significant negative correlation between leaf area and water use efficiency of leaves in 1 year,2 year and 3 year old trees.With the increase of the ages of the trees,the leaf area increased gradually,the water use efficiency decreased gradually,and the specific leaf area and water use efficiency showed a significant negative correlation(P<0.05).