土壤蒸汽消毒技术在防治土传病害时具有显著优势，是解决土壤连作障碍难题的重要手段之一，而蒸汽在土壤中的热传递特性与特定土壤的相关物理参数密不可分。针对云南独特红壤，运用烘干法、比重瓶法、热探针法、准稳态平板法测定影响热质传递特性的主要物理参数，测定结果如下：土壤容重为0.736 g/cm³、土壤含水率为26.2%、土壤颗粒密度为2.398 g/cm³、土壤孔隙度为69.3%、土壤导热系数为0.296 2 W/（m·℃），土壤质量比热容为57.840 3 J/（kg·℃）。研究结果为后续土壤蒸汽消毒试验以及热质传递仿真模型构建，提供了前期试验数据支持。

Soil steam disinfection technology has significant advantages in preventing and controlling soil borne diseases, and is one of the important means to solve the problem of soil continuous cropping obstacles. The heat transfer characteristics of steam in soil are closely related to the specific physical parameters of the soil. The main physical parameters affecting the heat and mass transfer characteristics of Yunnan unique red soil were determined by drying method, pycnometer method, thermal probe method and Metastability plate method. The soil bulk density was 0.736 g/cm³, the soil moisture content was 26.2%, the soil particle density was 2.398 g/cm³, the soil porosity was 69.3%, and the soil thermal conductivity was 0.296 2 W/(m·℃), the specific heat capacity of soil mass was 57.840 3 J/(kg·℃). The research results provide preliminary experimental data support for subsequent soil steam disinfection experiments and the construction of heat and mass transfer simulation models.