TDR法、中子法、重量法测定土壤含水量的比较研究  

A study on the comparison of measuring soil water content with TDR, neutron probe and oven dry

作　　者：王贵彦[1] 史秀捧[2] 张建恒[1] 梁卫理[1] 

机构地区：[1]河北农业大学农学院,河北保定071001 [2]河北省辛集市农业技术推广中心,河北辛集052360

出　　处：《河北农业大学学报》2000年第3期23-26,共4页Journal of Hebei Agricultural University

基　　金：河北省科委博士基金

摘　　要：对用TDR法、中子法和重量法测得的土壤水含量观测值的比较结果表明 ,随着土壤深度和测量时间的变化 ,中子法的平均测定误差为 3.76 % ,TDR法为 3.5 9%。并且这 2种方法的土壤水含量观测值的时空变化和重量法具有相同的趋势。因此 。A comparison of measuring soil water content with oven dry, neutron probe and TDR was made It showed that the mean error in soil depth and time of neutron probe measurement was 3 76% and that of TDR was 3 59% Soil water dynamics simulated with the regressive equations built with data measured with neutron probe and TDR were similar The result showed that it was reliable to measure soil water content both with neutron probe and TDR

关 键 词：TDR法 中子法 重量法 土壤水分 测定 

分 类 号：S152.7[农业科学—土壤学]