摘要
通过野外和室内不同梯度固体水处理盆栽实验(自然模拟),分析了固体水对苗木生长作用效应,结果表明:固体水可提高苗木根系土壤含水率、苗木成活率、生物量及光合速率、减少蒸腾速率,从而保证苗木良好的生长;从室内不同梯度固体水处理盆栽实验得出,经过两个月连续干旱,维持根系周围土壤的水分含量,从高到低依次为:1000g、750g、500g、250g固体水;环境因子对野外苗木的光合蒸腾速率的影响明显于对室内盆栽苗木光合蒸腾速率的影响;各树种由于其不同的生理生态特征,因而对固体水的适应性不同,这方面内容需进一步研究。
Test were taken in different gradient solid water treatment cultivated in pots in the field and room （ natural simulation）. The result showed： ①Solid water can increase soil moisture content, seeding survival rate,biomass and reduce the speed of transpiration, thus guarantee the seeding growth ; ②The test of pot cultivation with solid water treatment of different fradient was taken in the room. Through two months being arid in succession, the treatment of solid water, successively from high to low were 1000g, 750g, 500g, 250g ; ③Because their different physiology ecological characteristics of different species, adaptsbility to the solid water is different. The content in this respect needs to be studied further.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2010年第3期195-200,共6页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金(沙柳适生环境研究:3036008)资助
关键词
固体水
土壤容积含水率
成活率
光合速率
蒸腾速率
solid water
preserve soil moisture
survival rate
ohotosvnthesis velocity
transpiration velocity
