摘要
该研究是在有活动式内保温幕的前提下,通过增加固定式内保温幕提高保温效果.结果表明这一措施是可行的,采用地膜作为固定幕材料,在3月中旬可提高幕内气温1.0～3.1℃,各部位平均提高1.4℃;凌晨最低温度可提高1.4℃,并且在低温条件下,表现出更好的保温性.幕内热量的传递方向主要是向南侧和周边.地膜作为固定式内保温幕成本低,节能效果好,易实施,但对室内光照产生一定不利影响.
This study was carried out to improve the thermal conservation of greenhouses by installing fixed screens under the condition of moveable screen.The results of the experiment indicated that this measure was(remarkable).In the middle of March,fixed screens using mulch as materials can increase the temperature of 1.0~3.1℃,the average temperature from each spot 1.4℃,and the minimum night temperature 1.4℃.Particularly at the case of low temperature period,the function of the fixed screens was more efficient.Heat in the fixed screens was transferred toward south and to the borders.As the cost of fixed screens with mulch material is low and the operation is easy,the effect is excellent.However,it has the disadvantage of reducing the light intensity in greenhouses.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2005年第z2期208-210,共3页
Transactions of the Chinese Society of Agricultural Engineering
基金
山西省归国留学基金项目(2000053)
关键词
温室
内保温
地膜
固定幕
greenhouse
thermal conservation
mulch
fixed screen
