What is the appropriate ratio of red and blue LED grow light?
There are many questions about LED grow lights coming to consult. For example: the use of LED plant growth lights, the appropriate distance of supplementary light, and how long the lighting time is appropriate, but the most common problem is the ratio of red and blue LED plant lights. This is also the most difficult question to answer because of different plants. The ratio of red and blue light is different.
In this chapter, you will learn about:
1. Why do LED grow lights need red light and blue light
2. What are the wavelengths of red and blue LED plant lights
3. What are the functions of red and blue LED grow lights
4. What is the appropriate ratio of red and blue LED grow lights
Why do LED grow lights need red light and blue light
Scientists have discovered based on the research of sunlight that sunlight is composed of red, orange, yellow, green, blue, indigo, purple, ultraviolet, X-ray, gamma rays, etc. The wavelengths are arranged in descending order. After biologists' research, it is found that the only light that really has an effect on plant growth is red light and blue light, and other lights have only weak or counter-effects.
What are the wavelengths of red and blue LED plant lights
The actual wavelengths of red and blue light are 600~780nm and 400~500nm, but the growth of plants requires photosynthetic light. The efficiency of blue light with a wavelength of about 436~495 nm and red light at 620-720 nm on the photosynthesis of plants highest. Therefore, the red and blue light meets the main light quality of the plant growth stage, which is why LED plant lights are mainly red and blue light.
What are the functions of red and blue LED grow lights
Under the red light of LED plant lights, the chlorophyll content in the plant is high, photosynthesis is strong, and the synthesis of carbohydrates is high, which provides sufficient material and energy for plant growth; therefore, red light promotes the formation of plant chlorophyll, promotes stem nitrogen metabolism, It also greatly promotes flowering and fruiting.
The blue light of LED plant light mainly prevents plants from growing, promotes the formation of plant dry matter, has a significant effect on the growth of leaf roots, has a strong influence on the chemical composition of plants, and can promote the synthesis and quantity of protein and fat.
What is the appropriate ratio of red and blue LED grow lights
The ratio of red and blue LED plant growth lights is the ratio of red and blue lamp beads. Because there are many kinds of plants at present, even if the data is not perfect in all aspects, if you want to know the ratio of red and blue accurately, the data can only be used as Reference section.
At present, the most valuable reference is the solar spectrum ratio scheme. The ratio of sunlight to red and blue is about 6-8:1. Therefore, according to the analysis of the above red and blue light on the plant, the proportion of the blue light of the LED grow light can be adjusted larger before the flowering period, because the blue light is conducive to the growth of plant leaves. At the flowering period, the ratio of red and blue is normal. Because the red light of LED grow lights is beneficial to the flowering and fruiting of plants, the ratio of red and blue lamp beads should be changed regularly.
Therefore, when planting plants, choose LED grow lights, according to the plant growth stage, a reasonable combination of red and blue beads, in order to achieve the best lighting effect!
