Effect of Different Weather Conditions on Microclimate of  Sand Cultured Solar Greenhouse(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Different Weather Conditions on Microclimate of  Sand Cultured Solar Greenhouse

Author(s):: YU Mingying1; XIAO Juan1; QIU Zhaoning2; JIANG Peifu2; XIN Min2; DONG Rongze1; (1.School of Water Conservancy Science and Engineering,Taiyuan University of Technology,Taiyuan,Shanxi 030024；2.Sandband Science and Technology Co.Ltd.,Beijing 100048)

Keywords:: greenhouse; sand culture; greenhouse temperature; relative humidity; ground temperature

Abstract:: The greenhouse planted vegetables in sand located in Liucun town of Beijing was used as research object.The microclimate characteristics of greenhouse temperature,the ground temperature and the relative humidity in the greenhouse were observed and analyzed under the conditions of sunny,cloudy and overcast,in order to study the microclimate characteristics in sand cultured greenhouse.The results showed that diurnal variation of air temperature and ground temperature under the different weather conditions were similar,showing a single peak variation,the range of variation from large to small order was sunny > cloudy >overcast,however,the change of temperature in greenhouse was larger than that of ground temperature；there were two moments that air temperature and ground temperature were equal,and those moments could be regarded as basis on opening and closing the retractable thermal blanket.The high relative humidity level were common under three kinds of weather conditions,the time whose relative humidity was higher than 90% were up to more than 13 hours.The correlation analysis of ground temperature,relative humidity and the temperature in greenhouse showed that the positive correlation between ground temperature and the temperature in greenhouse,that negative correlation between relative humidity and the temperature in greenhouse,the coefficients were all higher than 0.8.

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Last Update: 2017-05-12