The Effect of Led Grow Light Different Wavelength

LED (Light Emitting Diode); using solid semiconductor chip crop luminescent material, when the forward voltage is applied at both ends, the carrier fluid in the semiconductor recombines, releasing excess energy and causing photon emission to produce visible light. Advantages: high efficiency, pure light color, low energy consumption; long durability and long life; safe and environmentally friendly, instant startup; anti-vibration, cold light source; low surface heat of the lamp body for a long time, good heat dissipation Get close to objects without scorching them. Based on this feature, the LED can be placed horizontally or vertically above the plant. The disadvantage is weak brightness and high cost.

The main reason is that the light required for plant photosynthesis is different from the lights we use for daily lighting.LED Plant Grow Light requires the use of the sun's light energy to assimilate carbon dioxide (CO2) and water (H2O) to produce organic matter and release oxygen.

Only the LED Grow Light can meet the above conditions, because only the Full Spectrum Led Grow Lights can emit the spectrum required for plant growth, and the plant must have suitable light rays for photosynthesis. The spectral range has a crucial impact on plant physiology.

Let us look at the effect of different wave lines on plants:

280 ~ 315nm: minimal impact on morphological and physiological processes;

315 ~ 400nm: less chlorophyll absorption, affecting the photoperiod effect, preventing stem elongation;

400 ~ 520nm (blue): the absorption ratio of chlorophyll and carotenoid is the largest, which has the greatest impact on photosynthesis;

520 ~ 610nm (green): the absorption rate of pigment is not high;

610 ~ 720nm (red): The chlorophyll absorption rate is low, which has a significant effect on photosynthesis and photoperiod effect;

720 ~ 1000nm: low absorption rate, stimulate cell prolongation, affect flowering and seed germination> 1000nm: converted into heat.

From the above data, the effect of different wavelengths of light on plant photosynthesis is different. The light required for plant photosynthesis has a wavelength of about 400 ~ 720nm. Light from 400 to 520nm (blue) and 610 to 720nm (red) contribute the most to photosynthesis. The ratio of light from 520 to 610 nm (green) absorbed by plant pigments is very low.

According to the above principle, the Full Spectrum Grow Light is basically made into three forms of red and blue combination, all blue and all red to provide light of two wavelengths of red and blue, covering the wavelength range required for photosynthesis. In terms of visual effects, the red and blue plant lights appear pink.

When the High Lighting Effect Grow Light is used to fill the plant, the general power is less than 50w LED plant fill light. For different plants, the height from the main leaf surface of the plant is 0.2 ~ 0.8 meters; the power is higher than 50w Energy Saving Led Grow Lights is suitable for different plants. The height from the main leaf surface of the plant is 0.5 to 1.5 meters when used; in combination with the above situation; the LED lamp is the most suitable lamp for plant supplementary light.

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