(LED grow light)It was found that compared with fluorescent lamp, mixed wavelength LED light source can significantly promote the growth and development of spinach, radish and lettuce and improve the morphological indexes; It can maximize the biological accumulation of sugarbeet, the beet element accumulation in hairy root is the most significant, and produce the highest sugar and starch accumulation in hairy root.
(LED grow light)Compared with metal halide lamp, the anatomical morphology of stems and leaves of pepper and perilla plants grown under wavelength LED changed significantly, and the photosynthetic rate of plants increased with the increase of optical density. Complex wavelength LED can increase the number of stomata of marigold and sage.