Minimising the energy footprint of indoor food production while maintaining a high growth rate: Introducing disruptive cultivation protocols
Minimising the energy footprint of indoor food production while maintaining a high growth rate: Introducing disruptive cultivation protocols
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DOI：
10.1016/j.foodcont.2021.108290
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发表时间：
2021-06-05
期刊：
影响因子：
6
通讯作者：
Xydis, George
中科院分区：
文献类型：
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作者：
Avgoustaki, Dafni Despoina;Bartzanas, Thomas;Xydis, George
室内垂直农场中的大多数栽培物种每天需要数小时的光照，以充分发挥其生物量，叶片大小，营养价值，味道和颜色的潜力。与此同时，由于运行时间长，电力成本可能非常高，这可能是技术进步和农场盈利能力的抑制因素。在这项研究中，我们测试了罗勒植物（罗勒）的生长在连续和间歇光周期。通过对3种不同光周期处理下的叶片生理指标的测定，分析了不同光周期处理下的耐光性。在第一室内生长室中，植物在16小时连续光照下生长，在第二室中在14小时间歇光照的正常光周期下生长，在第三室中在14小时间歇光照的负荷转移需求响应下生长。其目的是评估和设计灵活的间歇光照，以减少室内环境中种植的作物的电力消耗，同时保持植物的高生长速率和生物量生产。本实验研究的结果表明，当暴露于短时间10分钟的间歇性光照时，植物对非生物胁迫的反应呈正相关，而对栽培的生理反应没有显着影响。从光合速率、叶绿素含量、气孔导度和蒸腾速率等方面对植物的生理、生化和形态状况进行了评价。与连续光周期相比，间歇性光照的协议诱导生物质产量显著增加47%，从而对室内食品生产的能源足迹产生更经济，可持续，商业和生态影响。
The majority of the cultivated species in indoor vertical farms require many hours of light each day to reach their full potential in terms of biomass, leaf size, nutritional value, taste, and colour. At the same time, the cost of electricity can be very high due to the many hours of operation, which can be an inhibiting factor for the advancement of technology and the profitability of the farm. In this study, we tested the growth of basil plants (Ocimum basilicum) under continuous and intermittent photoperiods. The leaf physiological traits of three different photoperiod treatments were assessed and used to estimate the toleration rate of the plants under different light schedules. In the first indoor growth chamber, the plants were grown under 16 h of continuous light, in the second chamber under a normal photoperiod of 14 h with intermittent light, and in the third chamber under a load-shifting demand response with 14 h of intermittent light. The purpose was to evaluate and design flexible intermittent light exposure to reduce the electricity consumption for crops grown in indoor environments while maintaining a high growth rate and biomass production of the plants. The presented results of this experimental research show a positive correlation of the plants' responses to abiotic stress when exposed to short 10-min periods of intermittent light, without having significant effects on the physiological responses of the cultivation. The physiological, biochemical, and morphological status of the plants were assessed in terms of photosynthetic rate, chlorophyll pigments, stomatal conductance, and transpiration rate of the plants. The protocol with intermittent light exposure induced a significantly 47% increase in biomass production compared to the continuous photoperiod, resulting in a more economical, sustainable, business, and ecological impact on the energy footprint of indoor food production.