Can sunlight be used for photosynthesis by plants?
1.LEDThis saves power, produces very little waste heat, and has a long life. LED planting is absolutely possible, but I don't recommend LED with family support. Although LED can full spectrum, but the full spectrum light distribution is not uniform, if a small area of brachytherapy, for small plants, the spectral distribution is not balanced. And now I haven't found a LED with uvb. LED lamp power, uneven distribution can be used to solve large scale, long distance, but in general a full spectrum of LED is more suitable for factories and planting greenhouse. Meanwhile, the lack of UVB is also more suitable for growing C3 C4 plants. If the separate UVB chip, large area and high strength, can be. But in general, less efficient is less efficient. If the annual plant, regardless of the root development, regardless of shape, red and blue enough, if you consider the root development needs to add orange yellow light, orange light also has a certain underground accumulation.2., three primary colorsFever is not too much, cheap, spectral distribution is not very reasonable, relatively large energy consumption, plant utilization of the luminous utilization rate of less than 70%. The disadvantage of using three primary colors is that the energy consumption is still a little bigger. No 10000LX light intensity can be said to have no effect on desert plants. But the energy required by 10000LX is quite scary. I calculated that it would be about 500 watts per square meter (50CM distance), and it would be uneconomical to use it for a long time.
Fluorescent lamps can be used by plants for photosynthesis.Scientific research found that plant photosynthesis mainly by capturing sunlight absorption blue violet and red pigment to achieve, LED fluorescent lamp is made of white light, white light can be decomposed into seven colors, namely red orange yellow green blue indigo and purple seven colors of light. Fluorescent lights contain plants that need to absorb the two kinds of light used for photosynthesis, so plants can also do photosynthesis under fluorescent lights.
3. little sunsAs the name suggests, it is a small sun that simulates sunlight or even heat. If enough, bright enough, just like the sun. But if the condition is "enough", energy consumption is terrible, and the South African plants we like don't like it too much. This is absolutely useless, for tropical plants, the effect is good, or you intend to anti season lotus is no problem, but the energy consumption is too alarming, abandoned.4. rare earth lampThe main component is copper selenium powder, which produces a specific spectrum of two kinds of blue and pink. This is also the aquarium lamp, like the three primary colors, belonging to the fluorescent lamp. The spectral accuracy is higher than three primary colors, less than LED, that is to say, to achieve the same effect, the energy consumption is higher than LED, and the life span is shorter than LED. But his advantage is that the luminescence is uniform and the spectrum is continuous. This homogeneous light is better if we don't need too much exposure. I am mainly using this kind of blue, a certain amount of UVA and negligible UVB, more suitable for matching with UVB tube. Germany and the United States began producing this kind of lamp several years ago, used for water plants. It is also produced in china. 200W per square meter is basically enough for desert plants, if for plateau plants, can be increased appropriately. Not too much, it will be tragic ~! Now you use blue light meat, I must say, alone with the blue light will plant state is not normal, as if half of sunshine fill no problem, if the average is less than 2000LX in the daytime environment must be red.
