沈阳农业大学学报2025，Vol.56Issue(3)：42-50,9.DOI:10.3969/j.issn.1000-1700.2025.03.005
日光温室夜间不同深度土壤温差变化的量化分析
Quantitative Analysis of Temperature Difference Changes at Different Depths of Soil in a Solar Greenhouse at Night
摘要
Abstract
[Objective]To find out the amplitude and depth of soil temperature reduction below the ground caused by heat-releasing from soil in solar greenhouse at night,to calculate the heat storage capacity of soil at different depths,and to provide theoretical guidance for determination of soil heating depth and study on heating effect.[Methods]This study was carried out in test greenhouse in Jinan,Shandong province,at the intersection of the middle of east-west length and the middle of north-south span,0,0.1,0.2,0.3,0.5,0.6 m below the ground was selected as the measuring point,temperature sensors T0,T1,T2,T3,T5,T6 was set respectively on the point,and the heat flow plate H0 was set on the ground.Selecting the test data from 6∶00 to next 6∶00 on the sunny day and cloudy day to qualitatively analyze the changes of T0,T1,T2,T3,T5,T6 caused by T0 changes and the test data from 18∶00 to next 6∶00 to quantitatively analyze the decrease of T0,T1,T2,T3,T5,T6 caused by T0 decrease,to show soil temperature reduction amplitude at different depths,to calculate soil exothermic depth and soil temperature difference integral;the heat release intensity H0 was integrated to calculate heat-releasing volume,and then to calculate heat storage capacity of the soil.[Results]The study showed:the soil temperature difference decreased sharply with increasing depth.on sunny day night the depth of releasing heat was 0.25 m,and the heat-releasing volume was 5.56×105 J·m-2,and heat storage capacity between 0～0.25 m was 1.16×106 J·m-3·℃-1;on cloudy day night the depth of releasing heat was 0.67 m,and the heat-releasing volume was 6.05×105 J·m-2 and 83.33%of which was released from 0～0.3 m soil,and heat storage capacity between 0～0.67 m soil was 2.52×106 J·m-3·℃-1.[Conclusion]The results showed soil temperature difference decreased sharply with the depth at night.Heat releasing volume was concentrated in 0～0.3 m area in this test,heating soil in this area could affect nighttime air temperature in the greenhouse.The heat storage capacity of deep soil was much greater than that of shallow soil,and in this greenhouse the heating effect of shallow soil was obvious.关键词
日光温室/土壤温差/储热能力/放热量/加温深度Key words
solar greenhouse/soil temperature difference/heat storage capacity/heat-releasing volume/heating depth分类
园艺学与植物营养学引用本文复制引用
张传坤,温丹,刘波,赵旭,韩玉娟,宋计平,杨宁,王晓..日光温室夜间不同深度土壤温差变化的量化分析[J].沈阳农业大学学报,2025,56(3):42-50,9.基金项目
山东省农业科学院农业科技创新工程项目(CXGC2024A07) （CXGC2024A07）
