不同灌溉量下3种地被植物耗水特性的研究  

Study on Water Consumption Characteristics of Three Kinds of Ground Cover Plant under Different Irrigation Amount

作　　者：毛振华[1] 王林和[1,2] 张璐[1] 郭跃[3] 兰爱琴 王卓[1] 

机构地区：[1]内蒙古农业大学,内蒙古呼和浩特010019 [2]内蒙古蒙草抗旱股份有限公司,内蒙古呼和浩特010019 [3]北京林业大学,北京100083 [4]乌海市植物园,内蒙古乌海016000

出　　处：《内蒙古林业科技》2011年第1期18-22,共5页Journal of Inner Mongolia Forestry Science and Technology

基　　金：国家自然科学基金项目(30972417)资助

摘　　要：采用电子天平和Li-6400光合仪等仪器,于2010年8～9月间对园林绿化常用的3种地被植物,在不同灌溉量下的蒸散量、蒸腾速率变化、水分利用率及土壤含水量进行了研究。结果表明:蒸散量随灌水量增加而增加,但增长幅度不同;日均蒸腾速率大小依次为马蔺﹥委陵菜﹥八宝景天,处理Ⅲ﹥处理Ⅱ﹥处理Ⅰ;水分利用效率大小依次为八宝景天﹥马蔺﹥委陵菜,灌水量愈少水分利用效率越高;土壤含水量对蒸腾速率的影响极显著(P﹤0.01),两者呈线性关系。In August and September,2010,by use of electronic balance and Li-6400 photosynthesis system,the evapotranspiration,transpiration rate,water using rate and soil water content of three kinds of ground cover plant commonly used in landscape.The results showed that under different irrigating conditions,evapotranspiration increased with the irrigation amount at different increasing range.The mean transpiration rate was Iris lactea var.chinensisPotentilla anserinaSedum spectablile,and treatment ⅢⅡⅠ.The water using efficiency was Sedum spectablileIris lactea var.chinensisPotentilla anserina.The effect of soil water content on transpiration rate was significant（P0.01）,with a linear relationship between soil moisture and transpiration rate.

关 键 词：不同灌溉量 地被植物 耗水特性 

分 类 号：Q948.1[生物学—植物学]