Vegetable Growth Response To The Artificial Light-adjusting Condition

The illumination insufficient problem in vegetables fruit cultivation out of season impels researchers to seek means to change this condition. Thus the responses of plant growth to various illumination sources become hot-point of researchers'study scope The first used artificial lighting sources for plant growth is incandescent lamp, the neon lamp, the sodium lamp and so on. and researchers get some findings with them. But because these artificial illumination sources have a big electrical power consumption and they also emit spectrum which can't match with the plant photosynthesis absorption spectrum very well and the traditional fluorescent additive in photo-ecological film can only convert UV light energy in the solar radiant energy into blue and red wavelength, being not able to use the green spectrum and the peak red wavelength is far away from the peak absorption wavelength (660nm) of chlorophyll a or the band is too narrow. Therefore the application of organic conjugated molecule and acridine additive into the photo-ecological agriculture film and newly developed high efficiency and low energy cost light source LED provide people new ways to get close to the optimum solution.Light-adjusting photo-ecological agriculture film adequately transferred the energy of low photosynthesis efficiency into high efficiency part through the specific fluorescent additive in it. And whether the exciting and the emitting spectrum is matching with the absorption spectrum of plant photosynthesis is the key to evaluate the light energy converting performance of it. Through research on the local UV radiation and solar radiation spectrum ,this paper illustrates this film have great advantage in light energy...