[1]郝建,马小峰,谌红辉,等. 顶果木的耐旱性评价[J].西北林学院学报,2013,28(03):63-66.[doi:10.3969/j.issn.1001-7461.2013.03.11]
　HAO Jian,MA Xiao-feng,CHEN Hong-hui,et al. Evaluation of Drought Tolerance of Acrocarpus fraxinifolius[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(03):63-66.[doi:10.3969/j.issn.1001-7461.2013.03.11]
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 顶果木的耐旱性评价()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第28卷
期数:
2013年03期
页码:
63-66
栏目:
出版日期:
2013-05-30

文章信息/Info

Title:
 Evaluation of Drought Tolerance of Acrocarpus fraxinifolius
文章编号:
1001-7461(2013)03-0063-04
作者:
 郝建; 马小峰; 谌红辉; 刘志龙; 陈建全; 郭文福
 （1.中国林业科学研究院 热带林业实验中心，广西 凭祥 532600；2.凭祥出入境检验检疫局，广西 凭祥 532600)
Author(s):
 HAO Jian; MA Xiao-feng; CHEN Hong-hui; LIU Zhi-long; CHEN Jian-quan; GUO Wen-fu
 (1.Experimental Center of Tropical Forestry，Chinese Academy of Forestry，Pingxiang,Guangxi 532600,China；2.Pingxiang Import & Export Inspection and Quarantine Bureau，Pingxiang,Guangxi 532600,China)
关键词:
 ; 顶果木; 干旱胁迫; 耐旱性; 水分分布
Keywords:
Acrocarpus fraxinifolius;  drought stress;  drought tolerance;  moisture-distribution
分类号:
S792.99
DOI:
10.3969/j.issn.1001-7461.2013.03.11
文献标志码:
A
摘要:
为评价顶果木（Acrocarpus fraxinifolius）的耐旱性，采取模拟自然极度干旱条件方法，利用盆栽方式，研究顶果木在干旱胁迫期间的生长量、植株体水分分布。结果表明，停止供水后第1~16天的土壤含水量降幅较大，顶果木地径和苗高生长增幅出现明显的下降趋势，地茎生长的降幅尤为明显。干旱胁迫出现在第13天之后，干旱胁迫的临界土壤含水量为20%；结合顶果木苗木生长指标分析，第21天的土壤含水量（12.99%）可能已经达到顶果木的萎蔫系数；顶果木的地上部分对外界的水分环境状况响应速度比地下部分快，顶果木叶片和根系的含水量与土壤含水量之间具有显著相关性，相关系数分别达到0.88和0.91，茎含水量与土壤含水量之间的相关系数达到0.97的极显著水平。
Abstract:
 In order to evaluate the drought tolerance of Acrocarpus fraxinifolius,through simulating natural extreme drought conditions,the growth and the plant body moisture distribution of A.fraxinifolius were examined by potted method.The results showed that,from the 11th day to the 16th day after stopping watering,soil water declined significantly.The plant ground diameter and height growth of the plants decreased,and the growth of ground diameter decreased more significantly.The drought stress appeared after day 13 with the critical soil water capacity of 20%.At day 21,the soil water content was 12.99% which might reach the wilting coefficient based on the analysis of the plant growth.The response to the soil water capacity of the aerial parts was faster than the underground parts.Significant correlations were observed between the water contents of the leaves,roots and soil with the correlation coefficients of 0.88 and 0.91,respectively.The correlation coefficient between the stem moisture content and soil moisture content reached 0.97,belonging to extremely significant level.

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备注/Memo

备注/Memo:
 收稿日期：2012-09-12  修回日期：2012-10-28
基金项目：广西科学研究与技术开发计划项目（桂科攻10100012）；中国林科院基本科研业务费专项（CAFYBB2011005-8）。
作者简介：郝建，男，工程师，研究方向:森林培育。E-mail:xuzhouhaojian@126.com
*通信作者：郭文福，男，高级工程师，研究方向：南亚热带珍贵树种育种及栽培技术。E-mail:guo_wf@hotmail.com
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