Information on LED plant growth lamps

- May 20, 2019-

1.Characteristics of the editor

Wavelength types are abundant, which coincide with the spectral range of plant photosynthesis and photopoiesis. The spectral wave width is half width and narrow, pure monochromatic light and compound spectrum can be obtained by combining according to needs. Crops can be equally irradiated by concentrated light of a particular wavelength; It can not only adjust the flowering and fruiting of crops, but also control plant height and plant nutrition. The system has less heat and occupies less space, so it can be used in multi-layer cultivation system and realize low heat load and miniaturization of production space.

Characteristics of led plant lamps: abundant wavelength types, just in line with the spectrum range of plant light synthesis and light morphogenesis; The spectrum width is half width and can be combined to obtain pure monochromatic light and composite spectrum. Crops can be equally irradiated by concentrated light of a particular wavelength; It can not only adjust the flowering and fruiting of crops, but also control plant height and plant nutrition. The system has less heat and occupies less space, so it can be used in multi-layer cultivation system and realize low heat load and miniaturization of production space.

2.Typical usage editor

Plant lamps are used for indoor gardening, plant propagation and food production, including indoor hydroponics and aquatic plants. Although most plant lamps are used in industry, they can also be used in homes.

According to the inverse square law, reach the surface of the point source (in this case is the light bulb) radiation intensity of light source and surface distance is inversely proportional to the square of the distance of (if a twice as distant place, it receives only a quarter of the light) this is the serious obstacle indoor growers, many techniques are used to use light as efficiently as possible. Therefore, reflectors are often used for lighting to maximize light efficiency. The light fixture or fixture moves as close as possible so that they have the same illumination and all light from the lamp falls on the plant rather than the surrounding area.

Examples are incandescent, fluorescent, metal halide (HID) and light emitting diode (LED) lamps. Today, the most widely used professional lamps are HID and fluorescent lamps. Indoor flower and vegetable growers usually use high pressure sodium (HPS/SON) and metal halide (MH) HID lamps, but fluorescent and LED lamps replace metal halides due to their efficiency and economy.

Metal halide lamps are often used in the vegetative phase of plant growth because they emit higher amounts of blue and ultraviolet radiation. With the introduction of ceramic metal halide lighting and full-spectrum metal halide lighting, they are more and more used as the exclusive light source in the vegetative propagation and growth stage. The blue spectrum may induce a greater nutritional response in plants.

High pressure sodium lamp is also used as a single light source for the whole nutritional and reproductive stages. Again, they can be used as corrections for full spectral illumination during the reproductive phase. The red spectrum may trigger a greater flowering response in plants. Plant growth will be slightly faster if high pressure sodium lamps are used for the vegetative phase.

In recent years, LED indoor growth lamps have been able to produce light of specific wavelengths. NASA has been testing increasing the efficiency of space food on the space station. The results show that plants are affected by the red, green and blue parts of the visible spectrum.