土壤水分电磁射线测定法的田间应用潜力分析  

The Potential Analysis of Soil Moisture Electromagnetic Ray Measurement Method

作　　者：马孝义[1] 韩克敏[1] 胡彦华 熊运章[1] 

机构地区：[1]西北农业大学

出　　处：《土壤侵蚀与水土保持学报》1997年第2期67-74,共8页

基　　金：西北农业大学青年专项基金

摘　　要：分析了典型土壤质量吸收系数的田间变异，研究应用射线法测定田间土壤水分时的误差。研究表明：在整个电磁射线范围内，土壤容重和化学组成的田间变异对各种射线法的影响相当大。The variation of Mass Absorption Coefficient of several typical soils has been analysed and the measurement error of the erectromagnetic rays methcds using to field soil has been studied. It has been shown that within the whole range of electromagnetic rays, the field variation of soil bulk density and chemical properties has high effect to all kinds of soil moisture electromagnetic rays measurement methods, and the potential of these methods were small.

关 键 词：土壤水分 电磁射线 质量吸收系数 变异性 田间变异 土壤容量 化学组成 

分 类 号：S152.7[农业科学—土壤学]