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Position: Home > Articles > A Mathematical Model and Its Experimental Study for a Kind of Measurement Method of Soil Electric Conductivity Transactions of the Chinese Society of Agricultural Engineering 2001,17 (2) 25-28

一种土壤电导率测量方法的数学建模与实验研究

作  者：
孙宇瑞;汪懋华
单  位：
中国农业大学精细农业研究中心
关键词：
土壤;电导率;测量;建模
摘  要：
针对一种土壤电导率的测量方法——“电流—电压四端法”,从理论上深入探讨了该方法的测量原理 ,建立了对应的数学模型。关于 Wenner分布、Schlum berger分布和 Polar dipole分布 3种测量组态计算公式的正确性也通过实验进行了检验。
译  名：
A Mathematical Model and Its Experimental Study for a Kind of Measurement Method of Soil Electric Conductivity
作  者：
Sun Yurui Wang Maohua (Research Center for Precision Agriculture, China Agricultural University, Beijing 100083, China)
关键词：
soil; electric conductivity; measurement; model
摘  要：
The measurement of soil electrical conductivity has been increasingly gaining attentions because precision farming technologies rely on accurate field maps of the soil characteristics that affect field. In this paper, a mathematical model for four electrode measurement method was developed. The discussion concerned with the model consists of three steps. At first, the behavior of single current electrode at a depth of field was treated. Secondly, a combination of two current electrodes at a depth of field was analyzed and some formulas used for different configurations of electrodes were developed. At last, a lemma associated with this model was proven. In addition, some experiment results and a general conclusion referring to this study were presented.

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