干旱区生态环境知识资源中心(Arid): 宁夏半干旱偏旱区苜蓿引进品种在不同立地及干旱胁迫下抗旱性研究

Arid

	宁夏半干旱偏旱区苜蓿引进品种在不同立地及干旱胁迫下抗旱性研究
其他题名	Study on drought resistance the semiarid areas and of import alfalfa varieties under water stress in semiarid areas liable to drought of Ningxia
	李永平 1; 刘世新 1; 贾志宽 2; 刘沛松 3; 李明芳 1; 曹秀霞 1
ISSN	1000-7601
出版年	2008
卷号	26 期号:5 页码:69-74
中文摘要	连续3年对引进的14个紫花苜蓿品种在半干旱偏旱区的缓坡耕地、台地和川旱地三种不同立地类型区,分别布设旱地组和补充灌溉组进行田间试验,对同一苜蓿品种在不同立地类型和不同水分胁迫下的苗期抗旱性生理指标进行测定分析。结果表明,苜蓿品种叶片失水速率以补充灌溉最高,旱地次之,坡耕地最低;离体叶片失水速率（RWL）与保水力（HAW）、抗旱性指数（ID）之间呈负相关,HAW与ID呈显著正相关。对主要抗旱指标进行了多元回归预测和聚类分析。
英文摘要	The physiological indices of drought resistance in the seedling stage of 14 selected alfalfa（Medicago sativa） varieties were investigated for three years under three different kinds of site sections in the semi-arid prone to drought areas, including gently sloping farmland,arid plowland and arid plain land,and different water stresses of rainfall and supplementary irrigation.The results indicated that the rates of water loss in alfalfa leaves during water loss stages was the highest in treatment with supplementary irrigation,followed by treatment in dryland,and then treatment in gently sloping farmland.The correlation analysis of multi-physiological indices of drought resistance indicated that there were significantly negative correlations between the rates of water loss of alfalfa detached leaves（RWL） with water holding capacity（HAW） and drought resistance index（ID）,and significantly positive correlations between water holding capacity（HAW） and drought resistance index（ID）.The multivariate regress forecast and clustering analysis among the main drought resistance indices identified the drought resistance types and adaptability region of different alfalfa varieties,which were further validated in the production under different ecological regions.
中文关键词	宁南山区 ; 苜蓿 ; 水分胁迫 ; 抗旱性 ; 品种筛选
英文关键词	Southern Ningxia mountain region varieties of Medicago sativa water stress drought resistance selection of plant species
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3387705
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222252
作者单位	1.固原市农业科学研究所, 固原, 宁夏 756000, 中国; 2.西北农林科技大学干旱半干旱研究中心, 杨凌, 陕西 712100, 中国; 3.西北农林科技大学资源与环境学院, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	李永平,刘世新,贾志宽,等. 宁夏半干旱偏旱区苜蓿引进品种在不同立地及干旱胁迫下抗旱性研究[J]. 西北农林科技大学,2008,26(5):69-74.
APA	李永平,刘世新,贾志宽,刘沛松,李明芳,&曹秀霞.(2008).宁夏半干旱偏旱区苜蓿引进品种在不同立地及干旱胁迫下抗旱性研究.,26(5),69-74.
MLA	李永平,et al."宁夏半干旱偏旱区苜蓿引进品种在不同立地及干旱胁迫下抗旱性研究".26.5(2008):69-74.