Popularize the knowledge of LED plant lights:
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 red and blue plant lights are 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 plant lights are used to supplement light for plants, the height from the leaves is generally about 0.5 meters, and continuous exposure for 12-16 hours a day can completely replace the sun.
Because plants need sunlight to grow more luxuriantly. The effect of light on plant growth is to promote plant chlorophyll to absorb nutrients such as carbon dioxide and water to synthesize carbohydrates. But modern science can make plants grow better in places where there is no sun. People have mastered the inner principle that plants need for the sun, which is the photosynthesis of leaves. The photosynthesis of leaves requires the excitation of external photons to complete the entire photosynthetic process. The sun's rays are a process of energy supply stimulated by photons. Artificially created light sources can also allow plants to complete the photosynthetic process. Modern horticulture or plant factories are combined with supplementary light technology or complete artificial light technology. Scientists found that the blue light zone and the red light zone are very close to the efficiency curve of plant photosynthesis and are the best light sources for plant growth.
Use LED semiconductor bulbs to configure the most suitable light source for LED plant lights
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 different colors of light, and different colors of light can have different effects on plant growth.
The LED light source is also called a semiconductor light source. This light source has a relatively narrow wavelength and can control the color of the 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 bulb and blue bulb of this LED 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.
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