1. Different wavelengths of light have different effects on plant photosynthesis. The light required for plant photosynthesis has a wavelength of about 400-700nm. 400-500nm (blue) light and 610-720nm (red) contribute the most to photosynthesis.
2. Blue (470nm) and red (630nm) LEDs can just provide the light needed by plants. Therefore, the ideal choice for LED plant lights is to use these two color combinations. In terms of visual effects, the LED plant light with a combination of red and blue is pink.
3. Blue light can promote the growth of green leaves; red light can help blossom and fruit and prolong the flowering period.
4. The ratio of red and blue LEDs of LED plant lights is generally between 4:1-9:1, usually 4-7:1.5. When using LED plant lights to fill the plant with light, the general height from the leaves is About 0.5 meters, continuous exposure for 12-16 hours a day can completely replace the sun. Use LED semiconductor bulbs to configure the most suitable light source for plant growth. Proportional colored lights can make strawberries and tomatoes sweeter and more nutritious. To illuminate holly seedlings with light is to imitate the photosynthesis of plants outdoors. Photosynthesis refers to the process by which green plants use light energy through chloroplasts to convert carbon dioxide and water into energy-storing organic matter and release oxygen. Sunlight is composed of light of different colors, and LED plant lights of different colors have different effects on plant growth. LED plant light source is also called semiconductor light source. This light source has a relatively narrow wavelength and can control the color of light. Using it to irradiate plants alone can improve plant varieties. The holly seedlings tested under purple light have the highest growth, but the leaves are small, the roots are shallow, and they look like malnutrition. The seedlings under the yellowish light are not only short, but the leaves look lifeless. The holly that grows under the mixed red and blue light grows best, not only is strong, but the root system is also very developed. The red bulbs and blue bulbs of this LED plant light source are configured in a ratio of 9:1. The results show that the 9:1 red and blue light is the most beneficial to plant growth. After this light source is irradiated, strawberry and tomato fruits are full, and the content of sugar and vitamin C is significantly increased, and there is no hollow phenomenon. Continuous irradiation for 12-16 hours a day, strawberries and tomatoes grown under such a light source will be more delicious than ordinary greenhouse fruits.
