毛乌素沙地中几种植物水分特性的研究

用ＬＩ－１６００稳态气孔计研究了我国干旱半干旱地区毛乌素沙地恢复重建生态系统中几种主要植物的蒸腾作用及产量比较。结果表明：羊柴平荐处理后，生长旺盛，蒸腾速率加快，提高；日本大粒莉麦可利用较深层地下水分，维持旺盛的生长活动，

Study on the Water Ecophysiological Characteristics of Several Plants Species in Mu Us Sandland

Transpiration and yield comparison of several maln plant species adoped in re-stored and rebuilt ecosystem on Mu Us sandy grass land in arid and semiarid areas in Chinawere analyed using I,I- l6OO Protable Steady State Porometer. It showed: Hedysarum fruti-cos um grew quickly, its transpiration rate fasten and yield signif1cantly increased when itwere stumped; Fagopyrum esculentum from Japan can use deeper soil water to sustain quickgrowth, so its yield is higher; despite Sorghum bicolor use much more water than Zea mays,its biotic yield is also higher and its utility was more extensive, so it should be much devel-oped; Populus bolleana had a quick transpiration, the increasing stomata resistant and thelow transpiration in the morning and at the noon, respectively, accumulation of dry matter ismuch more than consumption, so it grew quickly than Populus spp. from local area, and italso had that of characteristics to tolerate drought.