【摘要】 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。更多还原

【Abstract】 Special cooling methods are needed for normal growth of crops in closed greenhouses which permit no ventilation, especially during warm seasons. Experiments were designed to evaluate two cooling methods(Watergy chimney method and pool method) in a closed greenhouse in Beijing during warm seasons. Preliminary 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.更多还原