摘要
针对滇中地区典型单栋塑料温室存在保温性能不足的缺点,该试验同时对双层非充气薄膜覆盖温室在冬季3种不同长度的日照条件下(由于遮挡导致日照长度不同)的室内外最低温度进行了对比测试,对其保温效果进行了分析。结果表明:在滇中地区采用双层非冲气塑料薄膜,即在现有普通大棚内加设一层薄膜(间距20～30cm),在日照长度分别为9h,6 5h和4h时,室内外最低气温的温差分别为3 25℃,2 03℃,-0 01℃;其中,在温室日照时间为9h时,冬季一月前后室内最低平均气温可达5 37℃,比单层薄膜温室提高5 68℃,说明非充气双层薄膜在低纬度地区有较好的经济性和适应性。
In the light of the defect in of typical single-ridge plastics greenhouse in Yunnan central area, on the contrary, the indoor and outdoor lowest temprature in single-plastic greenhouse were tested in winter under three different sunshining length conditions which caused by shade.The heat preservation effects of double-plastic greenhouse was analysizd. The results show that: when the double-plastic was used in greenhouse,that is,installing another plastic layer in the present popular greenhouse (the space is 20～30cm),the lowest temprature differences between indoors and outdoors are 3.25℃,2.03℃,-0.01℃ respectively when the sunshining length are 9h,6.5h,4h.Especially,when the sunshining length is 9h,the indoor lowest temprature is up to 5.37℃ averagely in January,which is 5.68℃ higher than in single layer plastic greenhouse. The greenhouse is economical and with good adaptability in low latitude areas relatively.
出处
《云南农业大学学报》
CAS
CSCD
2005年第2期286-289,共4页
Journal of Yunnan Agricultural University
关键词
温室
日照长度
双层塑料
保温
greenhouse
sunshine-length
double-plastic
heat preservation
