植物的生長全賴光合作用提供能量及資源。在這層面上,所選用的光源亦是一大學問。472Please respect copyright.PENANAG4WlEQbO6Q472Please respect copyright.PENANATge7Zg0lHH
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(圖2)葉綠素(Chlorophyll)為植物吸收光線的重要位置。472Please respect copyright.PENANAmI3Xe8u7iz
利用化學物分離葉綠素的話,共可分為葉綠素a及葉綠素b兩大部份。472Please respect copyright.PENANASjKmGbXYIe472Please respect copyright.PENANAjxh1GCqDTh
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葉綠素a主要吸收紅光,而葉綠素b則主要吸收藍光。472Please respect copyright.PENANA7BAcKAD4rN
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綠光並沒有有效地被葉綠素吸收的關係,因此葉綠素在我們的眼中呈為綠色。472Please respect copyright.PENANAePDm84Mc1x
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(圖3)近來有研究發現,配合日照再加上紫外線燈(UVA)的方式種植,生菜的葉綠素、蛋白質、維他命C及糖粉對比單獨日照方式種植更之為高,而硝酸鹽的成份則有所降低。472Please respect copyright.PENANAoysoMyoAwa472Please respect copyright.PENANA0PoHAELMUg
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這有可能是紫外線對植物的新陳代謝產生變化所致,還需要進一步的研究才能證實。472Please respect copyright.PENANAH7xL18PRWv
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Ref1:https://www.sciencedirect.com/science/article/pii/S0308814620325899?via%3Dihub#t0010472Please respect copyright.PENANAITSQk1mUen