| 摘要 |
PROBLEM TO BE SOLVED: To provide a seedling-growing device for a plant of Gramineae by using an artificial light, capable of accelerating a floral differentiation of the plant of Gramineae after its stabilizing transplantation. SOLUTION: This seedling-growing device equipped with a temperature- controlling device 22, humidity-controlling device 23 and carbon dioxide concentration-controlling device 24 for preparing the environmental conditions for growing the plant of Gramineae, is provided by irradiating both of a blue- colored light and far infrared light or only the blue-colored light in irradiating the artificial light from a light source panel to the seedlings by shading an outside light. Also, the growing state is detected by a plant-observing device 15 and a nutritious liquid component-analyzing device 20, and in accordance with the detected growing state, the irradiation period with both of the blue- colored light and far infrared light or only the blue-colored light is controlled by a light source-controlling device 21.
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