Evaluation of Two Cooling Methods for Closed Greenhouses  

封闭温室两种降温方法的评估（英文）

作　　者：张敏[1] 樊强[2] 党亚爱[1] 薛绪掌[3] 

机构地区：[1]西北农林科技大学理学院,陕西杨凌712100 [2]西北农林科技大学水建学院,陕西杨凌712100 [3]国家农业信息化工程技术研究中心,北京100097

出　　处：《Agricultural Science & Technology》2016年第6期1475-1478,共4页农业科学与技术（英文版）

基　　金：Supported by National High Technology Research and Development Program of China(2012AA101903,2011AA100504);Natural Science Foundation of Shaanxi Province(K3320215199);Research Fund for the Doctoral Program of Northwest A&F University(2452015291)~~

摘　　要：Special cooling methods are needed for normal growth of crops in closed greenhouses which permit no ventilation, especially during warm seasons. Experi- ments were designed to evaluate two cooling methods （Watergy chimney method and pool method） in a closed greenhouse in Beijing during warm seasons. Prelimi- nary results showed that average temperature at daytime （from 8：00 to 18：00） at 100 cm above ground surface in the closed greenhouse could be reduced by 8 with the Watergy chimney method. Average relative humidity fluctuated between 45% and 75% during daytime at 100 cm above ground surface within the closed greenhouse. With the pool method, average temperature was about 10 ℃ lower than that of the control greenhouse without pool at 50 cm above the ground surface. The peak temperature at 50 cm height was about 32℃ between 11：30 and 15：00 and, close to outside temperature. Temperature in this system satisfied normal growth of most crops, but relative humidity at 50 cm height were above 90% at daytime.该研究采用水循环烟囱和水池系统,分别建立两种不同的封闭温室,比较两种方法的降温效果。试验结果表明,在地面100 cm高度处,使用水循环烟囱的温度比不使用降温系统的温度平均降低8℃左右。在地面100 cm高度处,白天湿度值均保持在45%～75%,适宜作物生长。利用水池降温除湿,相比附近另外一个封闭温室,距地面50 cm高度处温度降低10℃左右。11：30-15：00之间,地面50 cm高度处的最高温度为32℃,基本接近外界温度。封闭温室的湿度较适宜植物的生长发育,但白天50cm高度处的湿度保持90%以上。

关 键 词：Closed greenhouse COOLING TEMPERATURE EFFICIENCY 

分 类 号：S625.51[农业科学—园艺学]