草业科学2009，Vol.26Issue(11)：73-77,5.
紫花苜蓿光能及叶片水分利用效率影响因子分析
Analysis on the influnce factors to utilizing efficiency of light and water for alfalfa
摘要
Abstract
To explore the influence factors of light use efficiency (LUE) and water use efficiency (WUE) of alfalfa, the related physiological ecology indexes (Pn, Tr, Gs, Ci, Ta, Tl, RH and PAR) were measured using portable C-340df photosynthesis instrument in the morning of sunny days at early flowering period on 12 four-year-old alfalfa varieties under field conditions. The results showed that: 1) The physiological factors (Ci and Gs) are the key factors that affect the LUE of Alfalfa, while some external enviornmental factors (PAR, Ta and RH) played a role effect on WUE;2) WUE and LUE of a variety, Medicago sativa cv. Pondus, were significantly (P<0.05) higher than others, and with highest dry matter.关键词
紫花苜蓿/光能利用效率/水分利用效率Key words
alfalfa/light use efficiency (LUE)/water use efficiency (WUE)分类
农业科技引用本文复制引用
龙明秀,吴振,高景慧,高阳,杨宏新..紫花苜蓿光能及叶片水分利用效率影响因子分析[J].草业科学,2009,26(11):73-77,5.基金项目
陕西省重大科技专项(STXY-01-2) （STXY-01-2）
西北农林科技大学校青年基金(08080247) （08080247）
西北农林科技大学留学回国人员科研启动基金(01140518) （01140518）
