羊草杂交B、BG群体净光合速率对异质生境的响应  

Response of Pn Value of Hybrid B and BG Population of Leymus chinensis to Heterogeneous Habitats

作　　者：蒙静[1] 沈振荣 马甜[3,4,5] 

机构地区：[1]宁夏农业综合开发办公室,宁夏银川750002 [2]宁夏农垦局农业综合开发办,宁夏银川750004 [3]宁夏农垦农林牧技术服务中心,宁夏银川750021 [4]宁夏大学农学院,宁夏银川750001 [5]中国科学院植物研究所,北京100093

出　　处：《宁夏农林科技》2013年第4期51-55,共5页Journal of Ningxia Agriculture and Forestry Science and Technology

基　　金：宁夏农业综合开发项目"不同生态类型区牧草新品种关键种植技术示范与推广-引进羊草新品种生长适应性及不同种植技术筛选"

摘　　要：运用数理统计方法,综合分析了宁夏白僵土、风沙土生境条件下,种植羊草杂交B群体、BG-2群体的净光合速率日变化与各个生理、生态因子的相关性及变化趋势。结果表明:羊草不同群体叶片光合作用日进程除表现为双峰型、午前高峰型和波动型之外,还表现为单谷型;白僵土试验地种植羊草的净光合速率Pn各时段值均超过风沙土;白僵土种植羊草BG群体净光合速率Pn与TC、E、WUE、SPAD之间有密切相关关系。A comprehensive analysis is made on the correlation and variation trend between the diurnal variation of the net photosynthesis rate and various physiological and ecological factors of hybrid B group and BG group 2 of Leymus chinensis grown under white muscardine soil and aeolian sandy soil habitat conditions in Ningxia using the method of mathematical statistics.The result showed that the diurnal process of the photosynthesis of the leaves of various groups of Leymus chinensis performed bimodal type,morning peak type and wave type and also performed single valley type.The net photosynthetic rate Pn values of Leymus chinensis at various phases grown on white muscardine soil were all higher than those on aeolian sandy soil.The net photosynthetic rate Pn of the BG group of Leymus chinensis grown on white muscardine soil was closely correlated with TC,E,WUE and SPAD.

关 键 词：羊草 净光合速率 生态适应性 白僵土 风沙土 

分 类 号：S543.9[农业科学—作物学]