灌施不同浓度Cl^-在模拟指流层状土壤中的迁移规律  

Migration Patten of Chloride Ions with Different Concentrations in Layered Soil with Simulated Finger Flow

作　　者：吴叔赢 邵霞珍 张建丰[3] WU Shu-ying;SHAO Xia-zhen;ZHANG Jian-feng(Gansu Urban and Rural Development Group of Rural Rrevitalization Co.,Ltd.,Lanzhou,Gansu 730000;Gansu Institute of Natural Resources Planning and Research,Lanzhou,Gansu 730000;Xi’an University of Technology,Xi’an,Shanxi 710048)

机构地区：[1]甘肃城乡发展集团乡村振兴有限公司,甘肃兰州730000 [2]甘肃省自然资源规划研究院,甘肃兰州730000 [3]西安理工大学,陕西西安710048

出　　处：《安徽农业科学》2020年第15期165-168,共4页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(50779055)。

摘　　要：在有指流产生条件下,研究灌施不同浓度的Cl^-在层状土壤的迁移情况。结果表明,上层土壤中Cl^-浓度沿垂直方向呈先增大后减小的趋势,在下层指流域中的过渡区域Cl^-浓度变化不大,在接近试验底部的累积区域Cl^-产生累积,浓度增大;指尖处的Cl^-浓度大于过渡区域Cl^-浓度;指流通道对Cl^-的迁移效率很高,占灌施进入土壤Cl^-质量的35%~55%。In the condition of finger flow happened,the migration of chloride ions with different concentrations in layered soil was studied.The results showed that the chloride concentration in the upper soil increased first and then decreased in the vertical direction.The chloride concentration in the transition area in the lower drainage area did not change much.The chloride concentration in the accumulation area near the bottom of the test increased.The chloride concentration in the fingertip was higher than that in the transition area.The chloride concentration in the fingertip was higher than that in the transition area.The transfer efficiency was very high,accounting for 35%-55%of the mass of chloride ions in the soil.

关 键 词：层状土壤 模拟指流 溶质迁移 

分 类 号：S152.7[农业科学—土壤学]