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。542Please respect copyright.PENANA4qZgByAxXy542Please respect copyright.PENANAKiCFtqu0ac
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(圖2)葉綠素(Chlorophyll)為植物吸收光線的重要位置。542Please respect copyright.PENANAbwa85DD6KG
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。542Please respect copyright.PENANAldri8qHeLt542Please respect copyright.PENANAXVpzQKYS6G
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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。542Please respect copyright.PENANAMUjzjWutwy
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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。542Please respect copyright.PENANAOdXmPd4ndA
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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。542Please respect copyright.PENANAPG3sAjDwr4542Please respect copyright.PENANARJtGq6GWLe
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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。542Please respect copyright.PENANA44q4Nb5oeU
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Ref1:https://www.sciencedirect.com/science/article/pii/S0308814620325899?via%3Dihub#t0010542Please respect copyright.PENANAJiyvwnWs8B