作　　者： ; ;

机构地区： 兰州大学生命科学学院干旱农业生态国家重点实验室

出　　处： 《农业工程学报》 2002年第6期111-114,共4页

摘　　要： 在连栋温室内用聚乙烯膜、镀铝膜 (单层镀铝 ,镀铝面朝下 )设置可移动式双层内保温幕 ,与对照温室和双层充气膜温室相比较研究其保温节能效果和对温室内光照度的影响。结果表明在甘肃榆中地区 ,连栋温室内使用可移动式双层内保温幕在初冬时节可以使供暖设施启动的时间推延 1个月左右 ,具有明显的节能效果 ;在启动供暖设施后 ,可以使温室内凌晨的温度提高 2 .5～ 3 .5℃ ,其保温效果优于双层充气膜 ;在阴雪天气下 ,与双层充气膜相比可以提高正午 12 :0 0温室内气温 ;对温室内光照度的影响有 3种情况 :在晴天 ,室内光照低于对照但高于双层充气膜的温室 ;在阴雪天 ,室内光照度略低于双层充气膜的温室 ;在多云天气下 ,对一个座北朝南的温室而言 ,可移动式双层内保温幕的聚乙烯膜正午在温室内距地面不同高度的平面上对光照度的影响面积占温室总面积的比因温室结构和当日正午太阳高度角的不同而不同 ,可由公式 :A =1- (β - x) / (a . tgα) The mobile double layers thermal screen(MDLTS) consists of the film polythere and film plating aluminum. The effects of setting were studied in the greenhouse. The results show that the MDLTS can postpone the commencement of heating facilities by about a month in early winter. When compared with double inflated plastic, the MDLTS increases temperature by 2.5～3.5℃ and 2℃ at 7:00 and 12:00, respectively, after starting up the heating facilities on rainy or snowy days. The effects of conserving heat and saving energy with the MDLTS was better than that of the double inflated plastic. In the greenhouse setting, the MDLTS had less illumination than that in CK and was better than that in the double inflated plastic house on a clear day. However the illumination was less than that in the greenhouse with double inflated plastic on rainy or snowy days. On a cloudy day, the ratio of the area affected by the film of polythene illumination to the area of house at the plane aparting from the earth is decided by the formula A=1-(β-x)/(a· tg α).

关 键 词： 可移动式双层内保温幕 保温节能效果 连栋温室 光照度

领　　域： [农业科学]