黄土高原主要能源林植物水分生理指标及抗旱力的研究  

THE STUDY ON THE WATER PHYSIOLOGICAL INDEX AND DROUGHT RESISTANCE OF MAIN ENERGYFOREST PLANTS IN THE LOESS PLATEAU

作　　者：傅左[1] 周泽生[1] 王晗生[1] 李立[1] 

机构地区：[1]中国科学院水利部西北水土保持研究所,陕西杨陵712100

出　　处：《水土保持研究》1992年第1期83-90,共8页Research of Soil and Water Conservation

摘　　要：本文对9种黄土高原能源林植物的水分生理指标及其抗旱能力进行了测定研究,并用主分量分析、聚类分析等方法,对测试树种进行了分类及抗旱性排序,结果表明,耐旱能源植物具有水势低、束缚水自由水含量比值大,蒸腾强度低以及叶片持水力强等特征,其中沙棘、沙柳、山杏、柠条和沙打旺具有较强的抗旱能力,是适应性较强的能源林植物。This article has studied the water physiological index and drought resistance of a energy-forest plants in the loess plateau.Useing the principal component analysis and the cluster analysis,we placed the plants in order of their drought resistance.The result shows,dry resistance plants have the characteristics,lower water potential, higher ratio of bound water and free water,lower transpiration ra- te and better leaf water holding power.Plants with better drought resistance,such as Hippophae rhamnoides Linn.,Armeniaca sibrica Linn.,Cargana Korshinskii Kom.,Slaix mongolica siuxov.,etc.,are the energy-forest plants with strong adaptability in arid area.

关 键 词：水分生理指标 抗旱能力 主分量分析 聚类分析 

分 类 号：S157[农业科学—土壤学]