The region where plants are most sensitive to the spectrum is 400-700nm. This spectrum is usually called the effective energy region of photosynthesis. Approximately 45% of the energy of sunlight lies in this spectrum. If the artificial light source 800wLED grow light is used to fill light, the spectral distribution of the light source should also be close to this range.
Some researchers believe that the orange-red light part has the greatest photosynthesis capacity. This does not mean that plants should be cultivated under such a monochromatic light source. For plant morphology and leaf color, plants should receive a variety of balanced light sources. The blue light source (400-500nm) is very important for plant differentiation and stoma regulation. If the blue light is not enough and the far-red light ratio is too much, the stems will overgrow, which will easily cause the leaves to turn yellow. The ratio of the energy of the red light spectrum (655-665nm) to the energy of the far-red light spectrum (725-735nm) is between 1.0 and 1.2, and the growth of plants is positive. But each plant has a different sensitivity to these spectral ratios.
The effects of the spectrum of each stage of the full-spectrum 800wLED grow light on plant photosynthesis:
280~315 nm: minimal influence on morphology and physiological processes.
315~400nm: Less absorption of chlorophyll, which affects the photoperiod effect.
400~520 nm (blue): The absorption rate of chlorophyll and carotenoids is the largest.
520~610nm (green): The pigment absorption rate is not high.
610~720nm (red): The absorption rate of chlorophyll is low, which has a significant impact on photosynthesis and photoperiod effects.
720~1000nm: Low absorption rate, stimulate cell elongation, affect flowering and seed germination.
>1000nm: Converted to heat.
Distribution of full-spectrum 800wLED grow light source:
(Each set uses 35W, the best irradiation radius is 4-5 meters, the best installation height is 2-2.5 meters, and the interval is 4-5 meters)
(Each set uses 70W, the best irradiation radius is 5-6 meters, the best installation height is 2.5.-3 meters, and the interval is 5-6 meters)
(Each set uses 150W, the best irradiation radius is 10 meters, the best installation height is 5-7 meters, and the interval is 10-12 meters)
(Each set uses 250W, the best irradiation radius is 15-20 meters, the best installation height is 8-12 meters, and the interval is 15-20 meters)
The full-spectrum 800wLED grow light is a supplementary light source for plant growth developed by simulating the solar spectrum. The visible light in the spectrum has a reasonable distribution ratio from the blue part of 385nm to the red part of 780nm. The light color is like daylight, with strong color rendering and color temperature. The drift is small, and it can fully meet the requirements of plants to supplement light.
The full-spectrum 800wLED grow light is based on the spectrum required by plants to develop a full-spectrum artificial light source, which can supplement light for the growth of plants at all stages, just like natural light allows plants to grow better. The full-spectrum 800wLED grow light can fill up the light for plants at any time. When the sun's light is insufficient, it can extend the light up time for the plants. Provides the light required by plants without being affected by any environmental changes.
The photon energy emitted by the light source varies with wavelength. The energy of 800wLED grow light with a wavelength of 400nm (blue light) is 1.75 times that of 700nm (red light). The rate of plant photosynthesis is determined by the number of photons that the plant can absorb at 400-700nm, and has nothing to do with the number of photons emitted by each spectrum.
But the common sense of ordinary people believes that the color of light will affect the speed of photosynthesis. Plants have different sensitivity to all spectra. This reason comes from the special absorption of pigments by the leaves. Just like chlorophyll, but chlorophyll is not the only useful pigment for photosynthesis. Other pigments are also involved in photosynthesis, so the efficiency of photosynthesis cannot only consider the absorption spectrum of chlorophyll.
The difference in photosynthesis path is also not related to color. Light energy is absorbed by the chlorophyll and carotene in the leaves. Energy is converted from two types of photosynthetic systems into glucose and oxygen with fixed water and carbon dioxide. This process uses all the visible light spectrum, so the effects of light sources of various colors on photosynthesis are almost the same.
The full-spectrum LED grow light can bring obvious effects to the growth of plants like sunlight, and is not affected by seasonal factors and regional problems, and can fill light at any time throughout the day. If it is only sunlight, the growth of plants will get worse with time when the season comes or northern regions, especially in greenhouses, greenhouses and other planting bases, which lack sufficient light. By using full-spectrum LED grow lights, it can not only promote Its growth can also extend the flowering period and improve the quality of plants.
For the cultivation of flowers, full-spectrum LED grow lights also play the role of landscape lighting. Because of the strong color rendering of the light source, it gives people a beautiful and pleasing feeling.
The advantages of full-spectrum LED grow lights can be highlighted, which should be suitable for the supplementary light needs of most plants. It can supplement the light of various wavelengths needed by plants.
