盆栽条件下不同供水处理对六个树种蒸腾速率的影响  

Effects of Different Water Supply Treats on the Transplratory Rate of 6 Species of Plants under Potted Condition

作　　者：李银芳[1] 杨戈[1] 蒋进[1] 

机构地区：[1]中国科学院新疆生物土壤沙漠研究所

出　　处：《干旱区研究》1994年第3期39-44,共6页Arid Zone Research

摘　　要：在三种供水条件下，研究了六个树种的生境土壤含水量、蒸腾速率、气孔阻抗和叶温与气温差。土壤含水量和蒸腾速率随供水量的减少而下降，气孔阻抗和叶温与气温差则增加。测定分析表明，六个树种的最优水分条件都应是充分供水（１００％），旱生树种并非喜旱，仅是耐旱而已。对土壤水分的消耗，早生灌木低于乔木，其中梭梭属最低。The soil water content, transpiratory rate,stomatic impedance and the difference between leaf temperature and air temperature of 6 species of plants under 3 different water supply treats were studied in this paper. The soil water content and transpiratory rate decrease following with the decreaseing of water supply but the stomatic resistance and the difference between leaf temperature and air temperature were opposite.The result showes that:The best water condition for these 6 species of phants are full water supply (100% ),the arid condition isn't the best condition for xerophytes,they only can adapt the arid condition. The soil water consumptions of xeromorphic shrubs are less than these trees and that of Haloxylon is least among these 6 species of plants.

关 键 词：林木 盆栽 水分协迫 蒸腾速率 树种 

分 类 号：S79[农业科学—林木遗传育种]