| 摘要 |
PROBLEM TO BE SOLVED: To provide a light supplement system for reducing variations of growing conditions caused by weather and suppressing a supplemental light quantity by making an optical spectrum during the daytime except for in sunny weather closer to an optical spectrum during the daytime in sunny weather under cover culture.SOLUTION: A light supplement system (1) irradiates a plant covered by a covering material (400) with light in a predetermined wavelength region set beforehand in a wavelength region where light quantity during the daytime but not in sunny weather is smaller than during the daytime in sunny weather under covering with the covering material (400). |
