Abstract
It isn't being cleared that effect of the fluorescent lamp on the growth of long-day plants Gypsophila paniculata. So, we made blue color fluorescent lamp, a red color fluorescent lamp and far-red fluorescent lamp to make clear effects for different light colors. These fluorescent lamps were installed in the examination district which covered it with covering film of the side 70cm, height 115cm, vertical 100cm, and 9:00-17:00 were lighted with natural light, 17:00-9:00 were lighted up with the fluorescent lamp. Long-day plant didn't bloom in the case of eight-hour long day without lighting and the blue irradiation. By the red irradiation, grass length expansion and flowering are controlled. By far-red irradiation, it became clear that grass length expansion and flowering were promoted.
