Using Movable Light-emitting Diodes for Electricity Savings in a Plant Factory Growing Lettuce

文献类型： 外文期刊

第一作者： Lil, Kun

作者： Lil, Kun;Yang, Qi-Chang;Tong, Yu-Xin;Cheng, Ruifeng;Lil, Kun;Yang, Qi-Chang;Tong, Yu-Xin;Cheng, Ruifeng

作者机构：

关键词： ascorbic acid;chlorophyll;fructose;glucose;Lactuca sativa;sucrose

期刊名称：HORTTECHNOLOGY （ 影响因子：1.087； 五年影响因子：1.059 ）

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收录情况： SCI

摘要： In this study, the effects of light-emitting diode (LED) panels with different illumination schedules and mounted above butterhead lettuce (Lactuca sativ a var. capitata) seedlings on lettuce growth and photosynthesis were examined, and the performance of the vertical and horizontal movable system on energy savings was evaluated. The illumination schedules used were fixed LED [F-LED (four LED panels illuminated the area below)] and movable LED [M-LED (two LED panels moved left and right once per day to illuminate the same area as F-LED)] at distances of 10 and 30 cm above the seedlings. The plant yields were uniform in all LED treatments. The highest light utilization efficiencies and lowest electricity consumption were found for the treatments with irradiation from a shorter distance above the seedlings. The true leaf numbers and ascorbic acid concentrations were the highest in the M-LED and F-LED treatments at a distance above the seedlings of 10 cm, while the leaf lengths and sucrose concentrations in these groups were significantly lower than those in the 30-cm treatment. These results indicate that illumination with M-LED can halve the initial light source input while maintaining yield and that sustained illumination from a shorter distance above the seedlings is the main factor in electricity savings.

分类号： S6

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