【作者】 佟国红； 李天来； 王铁良； 山口智治； 白义奎；

【Author】 Tong Guohong Li Tianlai Wang Tieliang Tomoharu Yamaguchi Bai Yikui(Faculty of Water Conservancy, Shenyang Agricultural University, Shenyang 110161,China;Faculty of Horticulture, Shenyang Agricultural University, Shenyang 110161 ,China;Institute of Agricultural and Forest Engineering, University of Tsukuba ,Tsukuha 305-8572, Japan)

【机构】 沈阳农业大学水利学院； 沈阳农业大学园艺学院； 日本筑波大学；

【摘要】 为了解大跨度日光温室室内的微气候环境特点,对沈阳地区12 m跨日光温室在无辅助热源情况下的温、光、湿环境及各壁面蓄放热情况进行了测试。测试结果显示:温室1 m处日均气温和0.2 m处日均地温在2月6日后均达到10-15℃以上,室内最低气温在2月中旬后达到8℃以上。温室内气温差值较小,而地温白天最大温差为10.3℃,夜间温室内土壤及墙体为热源,单位面积土壤向室内放热是墙体的近3倍。晴天日均透光率为60%左右。夜间,膜附近室内空气相对湿度通常为100%,高出后墙附近相对湿度8个百分点。更多还原

【Abstract】 To investigate thermal environment inside a large-scale sunlight greenhouse (12m wide and 60m long )in northeast China, temperature , solar radiation and humidity inside and heat flux on greenhouse surfaces were measured during winter in a sunlight greenhouse with no auxiliary heat recourses inside in the campus of Shenyang Agricultural University, China. The results show that both the air temperature at 1. 0m above soil surface and the soil temperature at 0. 2m under the soil surface are reach 10-15 ℃ on Feb. 6, and the lowest air temperature reaches 8 ℃ in the middle ten days of February. Air temperature differences in the space fluctuate in a small range, but the maximum soil temperature difference along the depth during daytime reaches 10 ℃. The results also show that the soil and the north wall are heat resources to greenhouse during nighttime, and the heat given to the interior air from the soil is about three times the quantity of that from the north wall per unit area. The mean transmissivity of greenhouse for solar radiation inside is about 60% during sunny days. The air relative humidity near the film is 100% during nighttime, and this is an increase of 8 percentage point to the air relative humidity near the north wall.更多还原