| 摘要 |
PURPOSE:To irradiate a plant with light rays only at necessary wavelength and to enable irradiation from a near part by supplying an insufficient light volume with a photosemiconductor. CONSTITUTION:A photosemiconductor 1 is set as an illuminant for making up for light volume deficient in growth of a plant 8 and the plant is cultured while freely changing an interval between the plant and the illuminant according to necessity. A light emitting diode is preferable as the photosemiconductor and a reddish photosemiconductor having 600-750nm light emitting wavelength is preferable. The illuminant is a relatively small-sized one, is advantageous for enjoying a plant and slightly dangerous even in being damaged. |
