灌溉对土壤水分分布和潜水蒸发的影响  

Effects of irrigation on soil water distribution and shallow groundwater evaporation

作　　者：曹红霞[1] 康绍忠[1] 何华[1] 

机构地区：[1]西北农林科技大学教育部旱区农业水土工程重点实验室,陕西杨陵712100

出　　处：《西北农林科技大学学报（自然科学版）》2003年第5期69-72,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：教育部科学技术研究重点项目(重点02075)

摘　　要：　通过室内土柱试验,对3种灌水处理条件下不同地下水埋深土壤中的水分分布和潜水蒸发规律进行了分析。结果表明,灌溉制度和地下水埋深对潜水蒸发影响较大。在同一水位下,总灌水量相同,灌水频率不同时,随灌水频率增加,潜水蒸发量显著减少;在同一水位下,低灌水频率土壤随次灌水量增加潜水蒸发减少,且水位越深,潜水蒸发量减少越大,水位越浅,潜水蒸发量减少越小。Water distribution and shallow groundwater evaporation in soil with different groundwater table under three irrigation treatments were investigated through soil column experiments in lab.Results showed irrigation schedule and groundwater table had a great influence on the shallow groundwater evaporation.The evaporation of shallow groundwater would decrease substantially when irrigation frequency increased at the same groundwater table and same irrigation quantity.The evaporation of shallow groundwater decreased at low irrigation frequency under the same groundwater table when the quantity per irrigation increased.Deeper the groundwater table,less the evaporation.

关 键 词：灌溉 土壤水分 区域分布 潜水蒸发 影响因素 室内土柱试验 潜水蒸发规律 

分 类 号：S152.72[农业科学—土壤学]