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.
基金
西北农业大学青年专项基金
