使用有色固態與液態透明資材調整光質

Using Colored Solid and Liquid Filters to Adjust Light Quality

方煒(Wei Fang) ； 李光軒(Kuan-Hsun Lee) ； 饒瑞佶(Ruey-Chi Jao)

《農業機械學刊》 8卷2期 (1999/06) Pp. 63-73

https://doi.org/10.30062/JAM.199906.0006

摘要

本研究使用光譜量測儀(spectroradiometer)量測30種有色的固態與液態透明資材在不同波段範圍的穿透率（透光率）並分析其調整光質之能力。當光線以光量子數單位(μmole/m^2/s)表示時，正午時太陽光光譜中紅光與遠紅光的光量比（R/FR值）在0.97～1.20之間，藍光與紅光的光量比（B/R值）在0.54～0.75之間。此些數值可透過有色的固態或液態透明資材來調整，進而改變在資材下方的作物的光形態發生(Photomorphogenesis)，從而影響其生長與分化。測試結果發現各式固態資材阻隔紅光或藍光的效果視顏色別與材質各有不同，阻隔遠紅光（或稱紅外光）的效果則普遍不佳。硫酸銅溶液可用來阻隔遠紅光（穿透率低），其減少紅光的程度較少，減少藍光的程度更少，造成R/FR與B/R值均提高，溶液濃度與厚度增加均會增加效果。玻璃紙可用來阻隔紫外線，以橙色的效果為最佳，其同時允許同色光穿透；三層共擠壓PEP膜也可阻絕紫外線，但可提高R/FR值。部份光選擇性膜可擋紫外線，紅色光選擇性膜則可加強紅光，但不影響遠紅光，造成R/FR值的提高。簡言之，使用測試的固態資材可調整R/FR與B/R值的範圍分別達97.2％～23％與-96％～1083％，使用硫酸銅溶液可調整R/FR與B/R值的範圍分別達37％～501％與19～160％，此些研究成果可提供植物光形態發生研究與研發光選擇性膜之參考。

關鍵字

光形態發生 ； 光質 ； 光選擇

並列摘要

The capability of altering the spectral distribution of sun light by using 30 types of solid state colored transparent materials and liquid solutions were investigated. When the amount of sun light was measured using the photon flux unit, i.e. μmole/m^(2)/s, the red(R): far-red(FR) ratio and blue(B): red(R) ratio during the solar noon were in the range of 0.97 to 1.2 and 0.54 to 0.75, respectively. These values can be altered using colored transparent materials and copper sulfate solutions, thus altering the photomorphogenesis response of the plant under the covers. All the solid state colored transparent materials tested were not able to block far-red light. Copper sulfate solutions can reduce red light and block far-red light from reaching the plant, thus B:R ratio and R:FR ratio can be increased. Values of R:FR ratio and B:R ratio can be further increased if the concentration and/or thickness of the solution increased. Glassy paper can block UV light and allows light with the same color to pass through. Coextruded three-layer film can block UV and increase R:FR ratio. Some of the photoselective films can block UV in some extends while red colored photoselective film can increase R light and has little effect on FR, thus increasing R:FR ratio. In conclusion, under the experimental conditions, the R:FR ratio can be altered from-97.2% to 23% using solid state colored transparent materials and from 37% to 501% using blue copper sulfate solutions. The B:R ratio can be alteredfrom-96% to 1083% using solid state colored transparent materials and from 19%to 160% using blue copper sulfate solutions. The results of the study can be useful in studying the photomorphogenesis of plants and developing photoselective films.

並列關鍵字

Photomorphogensis ； Light quality ； Photoselective