透明PVC塑膠布山型溫室日照能透過率之研究

Study of Solar Radiation Transmission in Transparent PVC Plasstic Gable-type Greenhouse

陳加忠(Chia-Chung Chen)

《中華農業研究》 42卷4期 (1993/12) Pp. 419-429

https://doi.org/10.29951/JARC.199312.0010

摘要

在此研究中量測山型屋頂單層PVC塑膠布溫室全日照量與光合成有效輻射量(PAR)之透過率物性。全日照量與PAR量之比值在溫室內外均相近。全日照量之透過率受溫室內部量測高度位置所影響。在上方橫梁位置約74%，在下方作物位置約50%。PAR透過率量測位置之影響並不大。全日照量透過率與PAR透過率與量測位置之全日照量並無關係。

關鍵字

PVC塑膠布山型溫室 ； 透過率 ； 全日照 ； 光合成有效輻射量

並列摘要

The transmittance of solar total radiation and the transmittance of photosynthetically active radiation (PAR) in a gable-type, single PVC covered greenhouse were studied. The ratio of solar total radiation to PAR was simlar for the locations within the greenhouse and in atmsphere. The solar total radiation was affected by the measuring levels of greenhouse. For the total solar radiation, the transmittance at the glazing level was nearly 74%, however, this values at the canopy level was nearly 50%. The transmittance of PAR almost kept the same at the different levels of greenhouse. Both of transmittance at the glazing and at the canopy levels did not have the direct relationship with the total solar radiation of the measuring levels.

並列關鍵字

PVC plastic greenhouse ； Transmittance ； Total solar radition ； PAR ； Gable-type