| 摘要: |
| 【目的】研究跨度对日光温室保温性能及番茄生长的影响。【方法】对陕西杨凌地区越冬种植番茄的8，10和12 m 3种跨度西北型日光温室的气温、光照、热流等参数进行监测，以日光温室夜间传热模型为基础，通过夜间气温的变化来分析跨度对日光温室保温性能的影响，同时监测了不同跨度日光温室中番茄幼苗的生长情况。【结果】10 m跨度日光温室1月份平均气温分别较8和12 m跨度日光温室高1.9和2.6 ℃；种植番茄的平均株高分别高0.4和2.2 cm，平均茎粗分别高0.3和0.5 mm；夜间气温的模拟值与预测值吻合度均较高，其中8 m跨度日光温室夜间气温预测模型的平均相对误差为4.40%，10和12 m跨度日光温室分别为2.43%和2.38%。【结论】供试3种跨度日光温室中，以10 m跨度日光温室的保温性能最好，较适宜在杨凌地区推广应用。 |
| 关键词: 日光温室 跨度 传热模型 保温性能 番茄 |
| DOI： |
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| 基金项目:国家科技支撑计划项目（2008BAD96B08-3） |
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| Effects of span on solar greenhouse’s air temperature and tomato growth and analysis of simulation |
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LIU Yufeng, ZOU Zhirong, JIANG Guozhen
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Northwest A&F University
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| Abstract: |
| 【Objective】The study was aimed to explore the effects of span on greenhouse insulation performance and tomato growth.【Method】The research monitored the air temperature,light,heat transfer and other weather parameters in the northwest solar greenhouse in Yangling which spans 8 meters,10 meters,12 meters.Based on the nighttime thermal model of solar greenhouse,the effects of span on solar greenhouse were measured by nighttime air temperature and tomato crop growth.【Result】Average temperature during January of solar greenhouse in 10 meters span is higher than 8 meters and 12 meters at 1.9 and 2.6 ℃;tomatoes’ average height in 10 meters is higher than 8 meters and 12 meters at 4 and 22 mm;tomatoes’ average stem diameter in 10 meters is thicker than 8 meters and 12 meters at 0.3 and 0.5 mm;nighttime temperature model fitted the measured data better,the relative error in 8 meters is 4.40%,which in 10 meters and 12 meters is 2.43% and 2.38%.【Conclusion】The solar greenhouse in 10 meters span has the best insulation performance among the researched greenhouses,which is the better span to spread in Yangling district. |
| Key words: solar greenhouse span thermal model insulation tomato |
