云南红壤热质传递相关物理参数的试验测定  

Experimental Determination of Physical Parameters Related to Heat andMass Transfer in Yunnan Red Soil

作　　者：王东 黄国亮 王东博 钱智勇 张毅杰 杨振杰 WANG Dong;HUANG Guo-liang;WANG Dong-bo;QIAN Zhi-yong;ZHANG Yi-jie;YANG Zhen-jie(College of Mechanical and Electrical Engineering,Yunnan Agricultural University,Kunming 650201,China;Key Laboratory of Crop Production and Smart Agriculture in Yunnan Province,Kunming 650201,China)

机构地区：[1]云南农业大学机电工程学院,昆明650201 [2]云南省作物生产与智慧农业重点实验室,昆明650201

出　　处：《科学技术与工程》2024年第30期12894-12900,共7页Science Technology and Engineering

基　　金：国家自然科学基金(32201689);云南省重大科技专项(202102AE090042-06-04);云南省自然科学基金青年项目(202201AU070228);云南农业大学科研启动基金项目(KY2022-12);云南省作物生产与智慧农业重点实验室开放基金(2022ZHNY08);云南省教育厅科学研究基金项目(2022J0305,2022J0306,2023Y0984)。

摘　　要：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/cm^(3)、土壤含水率为26.2%、土壤颗粒密度为2.398 g/cm^(3)、土壤孔隙度为69.3%、土壤导热系数为0.2962 W/(m·℃),土壤质量比热容为57.8403 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/cm^(3),the soil moisture content was 26.2%,the soil particle density was 2.398 g/cm^(3),the soil porosity was 69.3%,and the soil thermal conductivity was 0.2962 W/(m·°C),the specific heat capacity of soil mass was 57.8403 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.

关 键 词：蒸汽消毒 云南红壤 土壤含水率 土壤孔隙度 土壤导热系数 

分 类 号：S152.5[农业科学—土壤学]