摘要
介电特性被证明是研究土壤水分测定最有价值的参数,因为介电特性与土壤水分有着非凡的联系。电容传感器、时域反射仪(TDR)、频域反射仪(FDR)、中子法、电阻和电导率都能提供解释土壤含水量的介电特性谱。然而,由于不同土壤类型土壤介电特性的复杂性,在不同尺度上实现土壤水分高精度测定,仍然面临巨大挑战。本文综述了介电特性在土壤水分快速测定中的地位和几种典型介电特性土壤水分测定方法的研究进展,分析了介电特性土壤水分快速测定方法所涉及的难点,提出了消除土壤类型等影响介电特性土壤水分测定的差分解释法新思路,并对介电特性土壤水分测量技术发展进行了总结,指出了未来的研究方向。
Dielectric constant has proven itself to be a valuable contributor in the study of the measurement of soil water content(SWC)in the field,primarily due to its extraordinary association with SWC.Capacitance sensors,time domain reflectometer(TDR),frequency domain reflectometer(FDR),neutron thermalization,resistance and electric conductivity all have the dielectric spectrum to explain the soil water content.However,due to the complexity of the soil dielectric properties of different soil types,it is still a great challenge to measure soil water content with high accuracy at different scale ranges.This paper reviews the status of dielectric properties in the rapid determination of soil water content and introduces the research progress and working principle of several typical soil water content measurement methods using physical dielectric properties.The challenges for the rapid determination of soil water content by the dielectric properties are analyzed.And a new idea named differential interpretation method is proposed to eliminate the influence of soil types.Finally,the progress of soil water content measurement using dielectric properties is summarized and the future research directions and trends are pointed out.
作者
胡建东
李林泽
ABDULRAHEEM Mukhtar Iderawumi
苑锋
李保磊
位文涛
HU Jiandong;LI Linze;ABDULRAHEEM Mukhtar Iderawumi;YUAN Feng;LI Baolei;WEI Wentao(College of Mechanical and Electrical Engineering,Henan Agricultural University,Zhengzhou 450002,China;Henan International Joint Laboratory of Laser Technology in Agriculture Sciences,Zhengzhou 450002,China;State Key Laboratory of Wheat and Maize Crop Science,Zhengzhou 450002,China)
出处
《河南农业大学学报》
CSCD
2021年第4期603-611,638,共10页
Journal of Henan Agricultural University
基金
国家自然科学基金项目(32071890)。
关键词
土壤水分
介电特性
时域反射法
土壤类型
差分解释
soil water content
dielectric properties
time domain reflectometry
soil type
differential interpretation method
作者简介
胡建东(1965-),男,江西新余人,教授,博士,博士生导师,从事农业测试技术与仪器研究;通信作者:李林泽(1987-),男,河南周口人,博士研究生。
