Research on a closed transplant production factory for practical use

研究表明，人工光照和受控环境下的封闭式移植物生产系统可以在较短的时间内实现高质量移植物的商业化生产，减少了资源和环境污染。与传统的开放式生产系统（即温室）相比，生产周期可缩短30%。封闭体系的耗水量约为开放移栽生产体系的10%。移植物通过光合作用固定的co2与向封闭系统提供的co2的比例约为90%。每次移植能耗约为0.4 MJ，成本约为1.5日元。与蔬菜移植的价格（50-100日元）相比，这一费用相对较低。然后，人工照明的封闭系统可以用于增值移植物的商业化生产。移植对环境的生理反应和封闭系统的能量/质量平衡需要更多的研究

Our research showed that the closed transplant production system with artificial light and controlled environments is suitable for commercially producing high quality transplants in a reduced time period with reduced resource and environmental pollution. The production period could be reduced by 30 % compared with the production period in the conventional, open production system (i.e. greenhouse). The water consumption in the closed system was about 10 % of that of the open transplant production system. Percentage of CO_2 fixed by transplants through photosynthesis over CO_2 supplied into the closed system was about 90 %. Energy consumption per transplant was about 0.4 MJ and its cost was about 1.5 Yen. This cost is relatively low compared with the price of vegetable transplants (50-100 Yen). Then, the closed system with artificial lighting can be used for commercial production of value-added transplants. More research is needed for examining the physiological responses of transplants to environments and the energy/mass balance of the closed system