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当前位置: 首页 > 文章 > 土壤干旱对黄土高原2种半灌木植物生长与耗水规律的影响 西北林学院学报 2012,27 (6) 26-32+97
Position: Home > Articles > Effect of Soil Drought on Growth and Water Consumption of Two Subshrub Species in Loess Plateau Journal of Northwest Forestry University 2012,27 (6) 26-32+97

土壤干旱对黄土高原2种半灌木植物生长与耗水规律的影响

作  者：
蔡马;韩蕊莲;靳淑静;郭颖;梁宗锁
单  位：
仲恺农业工程学院生命科学学院;西北农林科技大学水土保持研究中心;西北农林科技大学生命科学院
关键词：
铁杆蒿;达乌里胡枝子;耗水特性;水分利用效率
摘  要：
2种半灌木的耗水特性存在差异。2种半灌木的月耗水量及总耗水量均表现为:适宜水分>中度干旱>重度干旱。除了铁杆蒿在适宜水分下的月耗水主要集中在7、8、9月外,其他水分条件情况下,月耗水主要集中在6、7月份,且7月份达到峰值。同时,这2种半灌木在重度干旱和中度干旱下的日耗水高峰均出现在14:00,在适宜水分下,达乌里胡枝子呈双峰曲线,最高日耗水时段分别出现在10:00和14:00,铁杆蒿则与其他水分条件下的变化规律保持一致。干旱胁迫均抑制了2种半灌木地上部的生长,但提高了根冠比。土壤水分含量对两者的水分利用效率均有较大影响,达乌里胡枝子在中度干旱和重度干旱条件下水分利用效率均有提高,铁杆蒿在中度干旱下最高,而重度干旱下最小。
译  名：
Effect of Soil Drought on Growth and Water Consumption of Two Subshrub Species in Loess Plateau
作  者：
CAI Ma1,HAN Rui-lian2,4,JIN Shu-jing3,GUO Ying3,LIANG Zong-suo2,3,4*(1.College of Life Science,Zhongkai University of Agriculture and engineering,Guangzhou,Guangdong 510225,China; 2.Center of Soil and Water Conservation,Northwest A&F University,Yangling,Shaanxi 712100,China; 3.College of Life Science,Northwest A&F University,Yangling,Shaanxi 712100,China; 4.Institute of Soil and Water Conservation,The Chinese Academy of Sciences and Ministry of Water Resource,Yangling,Shaanxi 712100,China)
关键词：
Artemisia gmelinii;Lespedeza davurica;water consumption characteristic;water use efficiency
摘  要：
Effects of soil drought on the growth and water consumption(WC) of two subshrub species occurring in Loess Plateau were examined,namely,Artemisia gmelinii and Lespedeza davurica.It was found that differences existed in WC pattern between the two species.The trends of monthly and total WC of the two species under different water conditions were in the order of without stress(adequate water)>medium stress>severe stress.Except that the monthly WC of A.gmelinii under adequate water condition concentrated in July,August,and September,while under other water conditions,the WC of the 2 species concentrated during June to July,and reached their the maximum values in July.The peak values of daily WC of the two species appeared at 14:00 under the medium and severe stresses.However,under adequate water condition,L.davurica exhibited two peak values at 10:00 and 14:00,respectively.The growth of the two species was inhibited under water stress,and the water use efficiency was affected significantly under drought stress.

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