文档介绍：分类号学校代码 10129
U D C 635 学号 08204066

不同灌溉量条件下六种地被植物的耗水特性
Water Consumption Characteristics of The Six Ground Cover
Plants Under Different Irrigation

申请人:毛振华
学科门类:农学
学科专业:水土保持与荒漠化防治
研究方向:沙区植物资源保护与利用
指导教师:王林和教授
张国盛教授

论文提交日期:二〇一一年六月
摘要

针对园林部门由于缺乏植物需水量数据,而造成的盲目、粗放式水分管理现状。
本文在五种不同灌溉量条件下对六种园林地被植物的蒸腾速率、土壤水分、蒸发散量、
生物量及水分利用效率进行了测定与分析。在积累植物需水量数据的同时,为城市园
林植物的选择与配置提供理论依据。主要研究结论如下:
(1)鹅绒委陵菜、马蔺蒸腾速率呈“双峰型”日变化,其余四种植物均呈“单峰
型”日变化。蒸腾速率与灌溉量、土壤含水量均呈正相关关系。六种植物蒸腾速率大
小为马蔺>鹅绒委陵菜>蒙古冰草>紫羊茅>大青山早熟禾>八宝景天。
(2)蒸发散量随灌溉量的增加显著增加,土壤浅层灌溉相对深沉灌溉蒸发散量增
加幅度更大。
(3)灌溉量与生物量呈正相关关系。六种植物在五个灌水水平中,均在处理 III
下水分利用率最高,种间水分利用效率大小为八宝景天>马蔺>鹅绒委陵菜>蒙古冰
草>大青山早熟禾>紫羊茅。通过综合分析,处理 III 为最佳灌溉量。
(4)2010 年 6~9 月间降水量为 ,根据反馈式灌溉原理六种植物 6~9 月
间所需灌溉总量分别为: 蒙古冰草(17mm),鹅绒委陵菜(), 紫羊茅
(),八宝景天(),马蔺(),大青山早熟禾()。
(5)六种地被植物的抗旱性强弱依次为八宝景天>蒙古冰草>鹅绒委陵菜>马蔺>
紫羊茅>大青山早熟禾。

关键词:地被植物;耗水特性;灌溉量

国家自然科学基金项目(30972417)
Water Consumption Characteristics of The Six Ground Cover Plants
Under Different Irrigation

Abstract
According to blind or vulgar water management situation caused by lack of plant
water requirement garden cover plants were researched,transpiration rate,soil
moisture,evapotranspiration,biomass and water use efficiency were examined and analyzed
systematically under five irrigation study accumulated the water
requirement data,simultaneously provided theoretical basis theory for plant selection and
main research conclusions were as follows:
(1)The Potentillaan serina、Iris lactea showed the “double apexes
type”;The remaining four kinds were the “single apex type”.The transpiration rate with the
irrigation,they both were positively related,and the transpiration rate with the soil moisture
content,they both were positively sequence of transpiration rate from high to
low was Iris lactea Pall. (Fisch) Koidz.