Effects of different light intensities on lettuce growth, yield, and energy consumption optimization under uniform lighting conditions

文献类型： 外文期刊

第一作者： Zou, Jun

作者： Zou, Jun;Luo, Shipeng;Shi, Mingming;Wang, Dawei;Liu, Wenbin;Shen, Yan;Ding, Xiaotao;Jiang, Yuping

作者机构：

关键词： Light intensity; Lettuce; Vertical farming; Energy consumption

期刊名称：PEERJ （ 影响因子：2.4； 五年影响因子：2.7 ）

ISSN： 2167-8359

年卷期： 2025 年 13 卷

页码：

收录情况： SCI

摘要： Vertical farming is an advanced form of modern agriculture, but it involves high energy consumption when providing supplemental lighting for crops. The research designed an automated lighting detection device and explored its application in vertical farms. It comprehensively investigated the effects of different red-blue light intensities on two lettuces (Lactuca sativa L. cv. 'Spanish green' and 'Butterhead') varieties under highly uniform supplemental lighting conditions. The research encompasses investigations into lettuce morphological parameters, photosynthetic physiology, productivity, and energy consumption. The experimental light quality and photoperiod were set at (R/B = 4, 16 h/d), with light intensity ranging from 125 to 300 mu mol/m(2)/s. The experiment indicates that with the increase in light intensity, the yield of both lettuce varieties also increases. Furthermore, lettuce exhibits a significant increase in leaf amplitude from day 20 to day 25 of growth. At 300 mu mol/m(2)/s, Butterhead lettuce demonstrates optimal fresh weight and productivity ratio. As for Spanish green lettuce, the productivity ratio at 200 mu mol/m(2)/s is only 2.11% lower than at 300 mu mol/m(2)/s. Under the cultivation conditions of R/B = 4 and 16 h/d, a light intensity of 300 mu mol/m(2)/s is suitable for the production of Butterhead lettuce, in comparison, a light intensity of 200 mu mol/m(2)/s is suitable for the production of Spanish green lettuce.

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