【作者】 蒋国振； 胡耀华； 刘玉凤； 邹志荣；

【Author】 Jiang Guozhen1,Hu Yaohua1,Liu Yufeng1,Zou Zhirong2(1.Electro-Mechanic College of NWSUAF,Yang Ling 712100,China;2.Horticulture College of NWSUAF,Yang Ling 712100,China)

【机构】 西北农林科技大学机电学院； 西北农林科技大学园艺学院；

【摘要】 下沉式日光温室提升了温室保温性能,但作物根部空气流通不畅,出现湿度聚集现象,引起病害,影响农作物生长和农户的经济效益。为了寻求除湿方法,以实测湿度为基础,结合水分输运模型,并拟采用机械通风方式,采用数值分析研究下沉式日光温室的湿度分布及运动。结果表明:作物下层较上层相对湿度高26.7%,温室后墙处较前墙处高3.7%,西侧较东侧高6.3%;数值分析结果显示,通风后各部位最大相对湿度差值小于13%。说明下沉式日光温室存在湿度分布不均衡现象,通风方式对改善湿度分布是有效的。更多还原

【Abstract】 Sunken greenhouse enhanced the insulation by setting the front wall,but the air circulation near the roots become poor.As the results,humidity aggregation occurs and causing disease,which affecting crop’s growth and farmers’ economic benefits.In order to find dehumidification method,combined with the water transport model,and intends to use mechanical ventilation,using numerical analysis study on humidity distribution and movement of sunken greenhouse.The results showed that:the relative humidity in roots is higher than canopy at 26.7%,the back wall is higher than the front wall at 3.7%,the west side is higher than the east side at 6.3%;numerical analysis showed that,after ventilation the maximum relative humidity difference of the various parts is less than 13%.It means that,humidity distribution imbalance in sunken greenhouse exists,and ventilation will help to improve the humidity distribution.更多还原