What is the difference between led plant growth light and ordinary light?

The principle of fluorescent lamps (fluorescent lamps and energy-saving lamps) is to use mercury vapor to generate electric discharge under the action of an applied voltage, which emits a little visible light and a large amount of ultraviolet rays. The ultraviolet rays stimulate the fluorescent powder coated on the inner wall of the tube to make it emit bright light. The service life and brightness are better than incandescent lamps. Disadvantages Long start-up time, stroboscopic will appear; affect the service life.

Incandescent lamp, the most commonly used lighting in life. Led Street lamps The principle of luminescence is based on the phenomenon of thermal radiation luminescence caused by a filament in a vacuum or neutral gas heated to an incandescent state by an electric current. The advantages are simple structure, low cost, convenient use and good brightness. Disadvantages: high heat generation, low luminous efficiency; short service life.

The tungsten halogen lamp is filled with inert gas containing halogen element (iodide) in the incandescent lamp body, and the principle of tungsten halogen cycle is used to improve the luminous intensity and service life. Disadvantages are poor shock resistance.

LED (Light Emitting Diode): Use solid semiconductor chips to produce light-emitting materials. When a forward voltage is applied to both ends, the carrier fluid in the semiconductor recombines, releasing excess energy and causing photons to emit visible light. Advantages: high efficiency, pure light color, low energy consumption; durable and long life; safe and environmentally friendly, instant start-up; anti-vibration, cold light source; long-term lamp body surface heat is low and good heat dissipation. Get close to the object without making it anxious. Based on this feature, the LED can be placed above the plant horizontally or vertically. Disadvantages: Weak brightness and high cost.

The main reason is that the light needed for photosynthesis of plants is different from the light we use for daily lighting. Plant growth requires the use of the sun's light energy to assimilate carbon dioxide (CO2) and water (H2O) to produce organic matter and release oxygen. This process is called photosynthesis.

And only LED lights can meet the above conditions, because only LED lights can emit the spectrum needed for plant growth, and plants must have suitable light rays for photosynthesis. The spectrum range has an important influence on plant physiology.