The role of different wavelengths of LED plant lighting

280~315nm - minimal impact on morphology and physiological process

315~400nm - less absorption of chlorophyll, affecting the photoperiod effect and preventing stem elongation

400~520nm (blue) - the absorption ratio of chlorophyll and carotenoids is the largest, which has the greatest impact on photosynthesis

520~610nm (green) - the absorption rate of pigment is not high

610~720nm (red) - low absorption rate of chlorophyll, has a significant impact on photosynthesis and photoperiod effect

720~1000nm - low absorption rate, stimulating cell extension, affecting flowering and seed germination

>1000nm - converted into heat

From the above data, different wavelengths of light have different effects on plant photosynthesis. The light required for plant photosynthesis has a wavelength of about 400~720nm. Light at 400~520nm (blue) and 610~720nm (red) contribute the most to photosynthesis. The light of 520~610nm (green) has a very low rate of absorption by plant pigments.

Convert to heat LED grow light Features:

1. Different wavelengths of light have different effects on plant photosynthesis. The light required for plant photosynthesis has a wavelength of about 400-700nm. Light at 400-500nm (blue) and 610-720nm (red) contribute the most to photosynthesis.

2. Blue (470nm) and red (630nm) LEDs can just provide the light needed by plants, so the ideal choice is to use these two color combinations. In terms of visual effects, the red and blue combination of plant lights is pink.

3. Blue light helps plant photosynthesis, which can promote the growth of green leaves, protein synthesis, and fruit formation; red light can promote the growth of plant roots and stems, which is helpful for flowering, prolonging the flowering period, and increasing yield!

4. The ratio of red and blue LEDs of LED plant lights is generally between 4:1-9:1, usually 6-9:1.

5. When using a plant lamp to fill the plant with light, the height from the leaves is generally about 0.5-1 meters, and the continuous irradiation for 12-16 hours a day can completely replace the sunlight.

6. The effect is very significant, and the growth rate is nearly 3 times faster than that of ordinary natural growth plants.

7. Solve the problem of lack of sunlight in the greenhouse in winter, and promote the chlorophyll, anthocyanin and carotene needed in plant photosynthesis, so that fruits and vegetables can be harvested 20% earlier, increase the yield by 30% to 50%, and improve the sweetness of vegetables and fruits. and reduce pests and diseases.

8. LED light source is also known as semiconductor light source. This light source has a relatively narrow wavelength and can emit light of a specific wavelength, so it can control the color of the light. By irradiating plants individually with it, plant varieties can be improved.

9. The power of LED grow lights is low, but the efficiency is extremely high, because other lights emit a full spectrum, that is to say, there are 7 colors, but what plants need are only red light and blue light, so most of the light energy of traditional lights is It is wasted, so it is extremely inefficient. And LED grow lights can emit the specific red and blue light that plants need, so they are extremely efficient, which is why LED grow lights with a few watts of power are better than tens of watts or even hundreds of watts of power. Another reason is the lack of blue light in the spectrum of traditional sodium lamps, and the lack of red light in the spectrum of mercury lamps and energy-saving lamps, so the effect of traditional lamps is much worse than that of LED lamps. Costs are greatly reduced.