控制基质质量含水率在65%左右时，仪器输出与基质溶液电导率呈幂函数关系，所建立的模型的决定系数达到0.970。

• When the water mass fraction is set at 65%25, the EC detector indicates a power function relation between the detector output and the substrate EC, and the correlation factor of the proposed model reaches 0.970.