PO和PVC薄膜温室的光温环境及其与薄膜流滴性的关系  

Light and Temperature Environment in PO and PVC Greeenhouses and Its Relationship With Condensation on the Films

作　　者：陈青云[1] 原园芳信 吉本真由美 

机构地区：[1]中国农业大学 [2]日本农业环境技术研究所

出　　处：《农业工程学报》1997年第1期130-134,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金

摘　　要：本研究通过对ＰＯ薄膜和ＰＶＣ薄膜温室光温环境的连续测量，分析比较了两种温室光温环境，同时测量了薄膜内表面凝结水量的差异，推导出了计算温室内外气温差的简便计算式。The radiation and temperature environment of PO and PVC greenhouses were examined in this research. The main results are as follows: The highest transmittance of total solar radiation in PO greenhouse is 76.7 % and its aged deterioration is very little. The transmittance of PVC greenhouse dropped to 71.6 % from 88.9 % . Condensation on the film in PO greenhouse is very little with 40 g/m 2. It is up to 140 g/m 2 in the PVC greenhouse. And the performance of anti drop of PVC film decreased rapidly with ages. It was observed that the solar radiation transmittance of greenhouses declined 11 % by 100 g/m 2 of condensation on film. According to the principle of heat budget, a new function was induced to evaluate the influence of condensation at the film on air temperature difference (inside outside).

关 键 词：温室 薄膜 光温环境 流滴性 

分 类 号：S625.5[农业科学—园艺学]