頁籤選單縮合
題名 | 塑膠布溫室之微氣候研究 (2):溫室之熱收支與溫、濕度環境 |
---|---|
作者姓名(中文) | 徐森雄; | 書刊名 | 中華農學會報 |
卷期 | 157 1992.03[民81.03] |
頁次 | 頁44-60 |
分類號 | 435.16 |
關鍵詞 | 塑膠布; 微氣候; 溫室; 溫度; 熱收支; 濕度; 環境; |
語文 | 中文(Chinese) |
中文摘要 | 本研究在高雄農業改良場內,針對長9m、寬6m、高3.2m,四周覆蓋每吋32目之塑膠網,前後上緣及屋頂覆蓋0.15 mmPVC塑膠布之東西向及南北向溫室,自78年8月25日至80年7月20日配合五期洋香瓜及二期蔬菜之栽植,進行室內微氣候觀測,有關室內熱收支及溫、濕度環境資料經分析可獲下述結論: 1. 東西棟溫室內之淨輻射較南北棟者為高,其對室外全天日射量之比率,東西棟夏季為64%,冬季為58%,南北棟夏季為51%,冬季為48%。 2. 晝間溫室內淨輻射之再分配中,以潛熱所佔比率最高,達65~70%,顯熱約佔25~20%,而地中傳導之熱量僅佔10%左右。 3. 四周通氣式溫室之氣溫水平分佈差異在2℃以內,室外氣溫日較差為9.6~12.7℃時,溫室內者為12.1~18.8℃,其比例約為1.1~1.5倍。 4. 於春夏乾燥時期,溫室內濕度平均高出室外20%,其他季節則差異甚小,當室內淨輻射為300 ly/day(室外全天日射量約600 ly/day)時,溫室內之蒸發散量可達4.5 mm/day。 |
英文摘要 | The Micro-climate of greenhouse had been studies in this paper. The greenhouse was orinted east-west and north-south, those had been coverd with plastic net (32 mesh per inch) in (0.15 mm thick). The micro-climate of greenhouse was measured from August 25, 1989 to July 20, 1991 that coordinate the cultivation of five terms musk melon and two terms vegetable. The results obtained about heat balance and temperature, humidity environment were sumarized as follows: 1. Net radiation (Rn) in E-W greenhouse was more than that in S-N greenhouse, the ration of Rn to outside solar radiation in the E-W greenhouse was 64% in summer and 58% in winter, that in the S-N greenhouse was 51% in summar and 48 in winter. 2. The latent heat flux (1E) was larger than sensible heat flux (L) in Rn rearrangement. The ratio of 1E to Rn was changed from 65~70%, and L to Rn was changed from 25~20%. 3. The horizontal distributional difference of air temperature in greenhouse was smaller than 2℃. The daily range of air temperature inside of greenhouse was changed 12.1~18.8℃, during that outside of greenhouse was changed 9.6~12.7℃, those ratio (inside/outside) was 1.1~1.5. 4. In drought spring season, the relative humidity in greenhouse was 20% higher than that outside of greenhouse. The evapotranspiration inside of greenhouse was 4.5 mm/day, during the net radiation inside of greenhouse was 300ly/day (outside global solar radiation was 600ly/day about). |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。