What's the influence factors of LED lamp to plants? (Part 1)

( Part 1 ) Do you know what’s the influence of LED to plants?

 

Effects of LED lights on plants.

1. In visible light, red & orange light ( wavelength of 600-700nm) and blue & purple light ( 400-500nm) are the most light absorbed by green plants.

2. Blue light is the necessary supplementary light when red light is used for plants, light intensity biological dosage is second only to red light.

Blue light restrains the elongation of stem,promote chlorophyll synthesis, beneficial to the synthesis of anthioxidant substances. Blue light affects plant phototropism, light morphogenesis, stomatal opening and leaf photosynthesis. Green , red and blue lights can adjust the growth in harmoniously. Generally , under red and blue LED composite light working, the plant is slightly purplish gray, which makes the disease and disorder symptoms difficult to diagnose. But it can be solved by adding a few green light.

The effect of green light and blue light are usually opposites, for example green light can reverse the stomatal opening which is promoted by blue light. Yellow , orange, green and purple lights are all important photosynthetically active radiation, but they are few requested by plants. Add yellow light to red and blue lights , which can dramatically improve spinach growth.

Yellow light has the best effect on improving nutrition to lettuce, but blue light is better to increase the contents of mineral elements to lettuce.

Add some yellow light and violet light can improve the photosynthetic capacity of cherry and tomato seedings. Relieve the low light stress of red and blue lights. Compare to white light, violet and blue light increased the activity of antioxidant enzymes, delay aging effects on plant, but red, green and yellow light inhibit the activity of antioxidant enzymes, accelerate the aging process of the plant.