时域反射仪与中子仪测定土壤含水量标定试验研究  

Calibration experiments of soil moisture by the methods of Time Domain Reflectometry and Neutron Probe

作　　者：尹志芳[1] 刘恩民[1] 陈炳新 罗毅[1] 

机构地区：[1]中国科学院地理科学与资源研究所 [2]山东省禹城市水务局,山东德州251200

出　　处：《干旱地区农业研究》2005年第6期161-165,共5页Agricultural Research in the Arid Areas

基　　金：中国科学院知识创新方向性项目(KZCX2-SW-317);国家高技术研究发展863计划(2003AA209030)项目

摘　　要：探讨了时域反射仪和中子仪测定土壤含水量的原理,并在禹城试验站对各自适宜的标定方法进行了试验。标定试验结果表明:时域反射仪和中子仪都应该用桶内标定法;时域反射仪可以不分层标定,而中子仪可以分三段标定。In this paper, the calibration measures of Time Domain Reflectometry （TDR） and Neutron Probe is discussed on basis of their theories and methods of measuring soil water content, and the processes of calibration experiments are described in detail. The results suggest that both of these instruments ought to be calibrated in barrel; TDR can be calibrated using the same formula in different depths of even soil profile; and Neutron Probe need to be calibrated by dividing the whole even soil profile into three segments.

关 键 词：时域反射仪 中子仪 标定 土壤含水量 

分 类 号：S152.7[农业科学—土壤学]