根据羊毛毡类多孔材料的结构特点，建立了2种计算毛细管水分吸附高度的数理模型。其中3维正交模型的计算值与实验值吻合较好，模型的计算精度可以满足工程应用的需要。这种建模思想对于分析其他类型多孔介质材料水分吸附与保持问题时也有参考价值。

A combined horizontal penetrometer was designed for the on-the-go and simultaneous measurement of soil water content and mechanical resistance. The maximum sampling rate for both sensors was 10 Hz and the maximum operating depth was 20 cm. For the water-content sensor, its measurement principle depends on the electric field of the fringe-capacitance. In order to evaluate the applicability of this combined penetrometer, four experiments in the field were carried out. These experiments included: (1) soil water content profiles test; (2) soil compaction measurement test; (3) effect of the operating velocity on the water content and resistant force measurement; (4) effect of operating depth on the force measurement. The experimental results show that the combined horizontal penetrometer is a practical tool since it can provide more useful information of soil physical properties.

Three types of optical sensors at wavelength ranging from visible to NIR, were used in laboratory environment for determining soil moisture content. Some index was defined to reduce measurement error caused by scatter. Two different sands and clay were tested from air dry to saturated conditions. The test results demonstrated that all tested sensors were very sensitive to soil texture and particle-size distributions. Because the wavelength from visible to NIR varies within the sizes of sand and clay, soil should not be viewed as a material with homogeneous property under optical measurement methods.

土壤含水量的快速、准确测量问题由于其特有的复杂性至今尚未得到圆满的解决。将微波传输线阻抗变换理论应用于土壤水分测量，据此理论提出的测量方案从数学上证明其可行，所设计出的便携式土壤水分测量仪不仅成本低，而且测量精度满足使用要求。

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、Schlumberger分布和Polar ipole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。