The effect of spectral range on plant physiology:
280nm ~ 315nm has minimal impact on morphology and physiological processes
315 nm~420nm chlorophyll absorbs little, affects the photoperiod effect, prevents stem elongation
420 nm~ 500nm (blue) The absorption ratio of chlorophyll and carotenoids is the largest, and has the greatest impact on photosynthesis
500 nm~620nm pigment absorption rate is not high
620nm ~ 750nm (Red Special) The chlorophyll absorption rate is "high", which has a significant impact on photosynthesis and photoperiod effects
750nm ~ 1000nm Low absorption rate, stimulate cell elongation, affect flowering and seed germination
>1000nm is converted into heat