1999 Fiscal Year Final Research Report Summary
Basic Research of an Environmental Control System for Stable and Rapid Mass-Production of Quality Transplants under Artificial Light in Closed System
| Project/Area Number |
09306017
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
生物環境
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| Research Institution | Chiba University |
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Principal Investigator |
KOZAI Toyoki Chiba University Faculty of Horticulture, Professor, 園芸学部, 教授 (90081570)
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| Co-Investigator(Kenkyū-buntansha) |
全 昶厚 千葉大学, 園芸学部, 助手
KUBOTA Chieri Chiba University Faculty of Horticulture, Associate Professor, 園芸学部, 助教授 (00280917)
CHUN Changhoo Chiba University Faculty of Horticulture, Assistant Professor
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| Project Period (FY) |
1997 – 1999
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| Keywords | Closed system / Transplant / Artificial light / Environmental control / Sweetpotato / 光合成 / 蒸散 / サツマイモ |
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| Research Abstract |
Our research showed that the closed transplant production system with artificial light and controlled environments is suitable for producing high quality transplants in a reduced time period with reduced resource and environmental pollution. The production period could be reduced by 30%. The water consumption in the closed was about 10% of that of open system (i.e. greenhouse). Percentage of COィイD22ィエD2 fixed by transplants through photosynthesis over COィイD22ィエD2 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.
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