土壤水分下渗综合性实验设计  

Design on comprehensive experiment of soil moisture infiltration

作　　者：孙晓庆 査恩爽[3] 王宇 卞建民 SUN Xiaoqing;ZHA Enshuang;WANG Yu;BIAN Jianmin(College of New Energy and Environment,Jilin University,Changchun 130021,China;Laboratory of Groundwater Resources and Environment,Ministry of Education,Jilin University,Changchun 130021,China;Construction Engineering College,Jilin University,Changchun 130021,China)

机构地区：[1]吉林大学新能源与环境学院,吉林长春130021 [2]吉林大学地下水资源与环境教育部重点实验室,吉林长春130021 [3]吉林大学建设工程学院,吉林长春130021

出　　处：《实验技术与管理》2021年第10期71-75,共5页Experimental Technology and Management

基　　金：国家科技重大专项(2018YFC1800400)。

摘　　要：基于水文学原理课程实践教学环节,为利用科研项目中的研究案例,设计了土壤水分下渗综合实验,探讨了盐渍土介质条件下土壤水盐垂向运移实验教学内容。在土壤水分下渗实验原有内容基础上,设计涵盖野外土样采集、土壤理化性质测定、实验装置操作与实验数据分析等4个关键环节,加深学生对土壤水分下渗实验整体性认识,提供开放性与创新性实验项目的拓展思路。实验获得了盐渍土在定水头水分下渗过程的水盐分布规律,判别了表层土壤水分拦截能力与深层土壤水分传输能力,分析了盐分的运移趋势。实验介质采用盐渍土,突出土壤水盐的协同作用,丰富了实验内容,有助于学生对实验数据规律的深度挖掘与课程原理的理解。Based on the practical teaching link of the hydrology principle course,and in order to use the research cases in the scientific research project,a comprehensive experiment on soil moisture infiltration is designed to explore the experimental teaching content of soil water and salt vertical transport under the condition of saline soil medium.Based on the original content of the soil moisture infiltration experiment,comprehensive experimental projects are designed,covering field soil sample collection,soil physical and chemical properties determination,experimental device operation and experimental data synthesis analyze,to deepen students’overall understanding of soil moisture infiltration experiment,and provide expanded ideas for open and innovative experimental projects.The distribution of water and salt in saline soil is obtained in the process of water infiltration at constant water head,to distinguish the water interception capacity of the surface soil and the water transport capacity of the deep soil.The experimental medium adopts saline soil,which highlights the synergistic effect of soil water and salt,enriches the experimental content,helps students to deeply explore the rules of experimental data,and understand the principle of the course.

关 键 词：土壤水分 下渗实验 电导率 水盐分布 实验教学 

分 类 号：X43[环境科学与工程—灾害防治]