干旱地区农业研究2018，Vol.36Issue(1)：102-107,6.DOI:10.7606/j.issn.1000-7601.2018.01.16
微咸水矿化度对重度盐碱土壤入渗特征的影响
Effect of mineralization degree of infiltration water on infiltration characteristics of severely saline-alkali soil
摘要
Abstract
One-dimension vertical water infiltration experiments were conducted using a vertical soil column.The study was conducted to study the relations between cumulative infiltration,wetting front depth,soil moisture content,in-filtration rate and infiltration time under different mineralization degree of infiltration water.The results showed that cu-mulative infiltration,wetting front depth,soil moisture content increased with the mineralization degree of infiltration wa-ter.However,compared with fresh water,the changes of wetting front depth and cumulative infiltration of 2,3,4 g·L-1 and 5 g·L-1is smaller.In the same depth of soil,soil moisture content was characterized by fresh water <5 g·L-1<3 g·L-1<2 g·L-1<4 g·L-1.Cumulative infiltration was in good linear relationship with wetting front depth under brackish water irrigation.The Kostiakov infiltration model,Philip infiltration model and Green-Ampt infiltration model was compared in terms of quantifying saline water infiltration process,by which Kostiakov model was proposed.关键词
微咸水/湿润锋/累积入渗量/土壤含水率/入渗率模型Key words
brackish water/wetting front depth/cumulative infiltration/infiltration moisture content/infiltration model分类
农业科技引用本文复制引用
刘小媛,高佩玲,张晴雯,王乃江,赵连东..微咸水矿化度对重度盐碱土壤入渗特征的影响[J].干旱地区农业研究,2018,36(1):102-107,6.基金项目
国家水体污染控制与治理科技重大专项(2015ZX07203-007) （2015ZX07203-007）
国家自然科学基金(41402208) （41402208）
山东省自然科学基金(ZR2011EL020) （ZR2011EL020）
国家级大学生创新创业训练计划项目(201510433047) （201510433047）
山东省自然科学基金项目(ZR2016EEM34) （ZR2016EEM34）
