摘要
[目的]土壤是高热容介质,其温度与热通量变化可在一定程度上反映不同墙体结构日光温室的蓄热保温性能差异。为探明不同复合墙体结构对日光温室土壤热特性的影响。[方法]本试验以砖土复合墙体结构(双24cm厚砖墙内夹50cm厚黄土)、砖煤复合墙体结构(双24cm厚砖墙内夹50cm厚煤渣)、砖苯复合墙体结构(37cm厚砖墙外贴10cm厚苯板)日光温室为研究对象,通过分析冬季温室内夜温、典型天气下10cm深度处土温、同一温室不同土壤深度间的温度变化规律、同一深度不同温室间的温度变化规律、土壤温度与土壤热通量日变化规律等,初步评价了不同墙体结构日光温室的土壤热特性差异。[结果]砖土温室的土壤热稳定性和蓄热保温性能最好,而砖苯温室的隔热效果最好、白天接受太阳辐射后土壤升温最快。[结论]综合考虑,砖土复合墙体结构日光温室的土壤热特性较优,有利于作物维持较高的根系活力,在晋中地区的推广应用前景较好。
[Objective]As a medium with high heat capacity,the soil temperature and heat flux change can reflect the performance differences of heat accumulation and preservation in solar greenhouse with different wall structures to a certain extent.[Methods]This experiment was conducted with brick-loess compound wall（double layers of 24 cm bricks with the internal 50 cm loesses）,brick-cinder compound wall（double layers of 24 cm bricks with the internal 50 cm cinders）and brick-polystyrene compound wall（37cm bricks with outer adhering 10 cm polystyrene boards）as the research subjects.The differences of soil thermal properties in the three solar greenhouses were initially evaluated by analyzing the night temperature of greenhouse in winter,the soil temperature at 10 cm depth under typical weather days,the soil temperature change rules of different depth in each greenhouse and different greenhouse at the same depth,and the diurnal variation of soil temperature and heat flux.[Result]The studies showed that the brick-loess greenhouse had the best soil thermostability and heat accumulation-preservation performance,while the brick-polystyrene greenhouse had the best insulation advantage and temperature rise rate under solar radiation.[Conclusion]All things considered,the brick-loess greenhouse showed a better soil thermal characteristic,thus being helpful for crops maintaining higher root activities.Therefore,the brick-loess wall has better extending application prospect in Jinzhong area.
作者
石玉
潘媛媛
张毅
李姝
李梅兰
侯雷平
Shi Yu Pan Yuanyuan Zhang Yi Li Shu Li Meilan Hou Leiping(College of Horticulture, Shanxi Agricultural University, Taigu, 030801 , China)
出处
《山西农业大学学报（自然科学版）》
CAS
2017年第9期679-684,共6页
Journal of Shanxi Agricultural University(Natural Science Edition)
基金
山西省科技攻关资助项目(20140311011-4)
山西省高等学校教学改革创新项目(J2016029)
山西省煤基重大科技攻关资助项目(FT201402)
关键词
日光温室
复合墙体
土壤热性质
Solar greenhouse
Compound wall
Soil thermal properties
