偃麦草属3种植物的持水力和蒸腾速率  

Water-keeping Ability and Transpiration Rate of 3 Elytrigia Desv. Plants

作　　者：张力君[1] 彭运翔[1] 王永生[1] 

机构地区：[1]内蒙古农业大学农学院

出　　处：《干旱区资源与环境》2001年第S1期68-70,共3页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目 (编号 C3976 0 0 12 )

摘　　要：采用盆栽育苗法 ,对偃麦草属 3种植物的持水力和蒸腾速率进行了测定。提出了判定植物持水力的新概念 -拐点持水力。依此方法 ,毛偃麦草的持水力远大于偃麦草和中间偃麦草。Water-keeping abilities and transpiration rates of 3 Elytrigia Desv. plants were studied on the culture pan seedlings. Water-keeping ability on turning point, a new concept was suggested. According to this concept, the Water-keeping ability of E.trichophora was much higher than the other two plants. By contrast, transpiration rate of E.trichophora was significantly lower than that of the other two species.

关 键 词：偃麦草属 持水力 蒸腾速率 

分 类 号：S543[农业科学—作物学]