The Influence Of The Spectrum Of LED Grow Light On Plants

Writer：Jane Time：2021-06-21 Browse：199

Different wavelengths of light have different effects on photosynthesis of plants. The wavelengths of light needed for photosynthesis of plants are around 400 ~720nm. Light at 400 to 520nm(blue) and 610 to 720nm(red) contribute the most to photosynthesis. 520-610 nm(green) light is absorbed by plant pigments at a very low rate.

Led plant growth light is dedicated to plants produce flowers and vegetables in combination with high precision technology, an auxiliary plant growth lamp general indoor plants, flowers, will grow more and more with the time difference, the main reason is the lack of light, through the spectrum of led light, suitable to plant needs not only can promote its growth, but also can extend the flowering, improve the quality of the flower.

LED plant lamp is favored by agricultural research institutes and intelligent plant factories all over the world because of its accurate light quality, artificial combination and adjustment, high photosynthetic radiation per unit power consumption, good plant light supplement effect, low operating cost (super energy saving) and many other advantages.

Different plants have different requirements for the spectrum, such as red/blue 4:1 for lettuce, strawberry 5:1, universal 8:1, some need to increase the infrared and ultraviolet. The ratio of red to blue light is best when it can be adjusted according to the plant's growth cycle.

Let's take a look at the effect of the spectral range of plant lamps on plant physiology.

280 ~ 315nm: little effect on morphology and physiological processes

315 ~ 400nm: Less chlorophyll absorption, affects photoperiod effect, and prevents stem elongation

400 ~ 520nm (blue) : The absorption ratio of chlorophyll and carotenoid is the largest, which has the greatest effect on photosynthesis

520 ~ 610nm (green) : The absorption rate of pigment is not high

610 ~ 720nm (red) : Low absorption rate of chlorophyll, which has a significant effect on photosynthesis and photoperiod effect

720 ~ 1000nm: Low absorptivity, stimulating cell elongation, affecting flowering and seed germination

>1000nm: Converted to heat

Therefore, different wavelengths of light have different effects on photosynthesis of plants. The wavelengths of light needed for photosynthesis of plants are around 400 ~ 720nm. Light at 400 to 520nm (blue) and 610 to 720nm (red) contribute the most to photosynthesis. 520-610 nm (green) light is absorbed by plant pigments at a very low rate.