| 摘要: |
| 为更好的适应生产需要，提高经济效益，对日光温室结构进行技术改造。设计建造了无后墙的双屋面拱形钢架结构的下沉式大跨度大棚型温室，以普通日光温室为对照，对温湿度、建筑成本及经济效益进行比较分析。结果表明：无论晴天还是阴天，下沉式大跨度大棚型温室的气温和地温均高于对照温室，7 d中2个温室的最高气温相差2.8℃，最低气温相差4.1℃，前者的最低地温较对照的最高地温还高0.6℃。2个温室相对湿度相差不大。下沉式大跨度大棚型温室的建筑成本和收益分别为220.4和72.2元/m2，建筑成本比对照温室减少65.1元/m2，且收益增加了11.1元/m2。下沉式大跨度大棚型温室是一种保温性能好，低投入高产出的温室类型，具有良好的应用前景。 |
| 关键词: 温室 下沉式 温度 相对湿度 建筑成本 |
| DOI：10.11841/j.issn.1007-4333.2014.04.24 |
| 投稿时间：2013-11-06 |
| 基金项目:公益性行业（农业）科研专项（201303002） |
|
| Design and application study on the sinking and great-span greenhouse without back wall |
|
HAN Li-rong1, WANG Hong-li1, LI Kai2, YANG Xiao-long1
|
| (1.College of Horticulture, Northwest Agriculture and Forest University, Yangling 712100, China;2.College of Water Resources and Architectural Engineering, Northwest Agriculture andForest University, Yangling 712100, China) |
| Abstract: |
| In order to improve production and enhance profits,a double roofing,steel frame,sinking,great-span greenhouse without back wall was designed and built.Comparing to common greenhouse by considering temperature,relative humidity,construction costs and profits,the air temperature and ground temperature,whenever sunny day or not,were much higher of the new designed greenhouse than the ordinary control greenhouse.The lowest air temperature of new greenhouse was 4.1℃ higher and the highest higher air temperature was 2.8℃ higher than the latter on 7 consecutive days.The lowest ground temperature in the new greenhouse was 0.6℃ higher than the highest ground temperature in the control greenhouse on 7 consecutive days.Relative humidity of the two greenhouses had little difference.The construction costs and profits of this new greenhouse were 220.4 and 72.2 yuan/m2.The construction costs was 65.1 yuan/m2 less than the common greenhouse and the profits was 11.1 yuan/m2 more than the latter.So sinking,great-span greenhouse without back wall is a kind of lower cost and better heat preservation greenhouse type,which has good application prospect. |
| Key words: greenhouse sinking temperature relative humidity construction costs |
