LED grow light used in plant cultivation facilities

LED lighting as a research plant photosynthesis supplement traditional artificial light sources generate too much heat, such as the use of LED lighting and supplemental hydroponic systems, air can be recycled, excess heat and moisture can be removed, the power can be efficiently into active radiation, and ultimately transformed into plant matter. Studies have shown that: the use of LED lighting, the growth rate of lettuce, photosynthetic rates have increased more than 20%, the LED for Plant Factory is feasible. The study found that compared with fluorescent lamps, the mixed wavelength LED light source can significantly promote the growth of spinach, radishes and lettuce, improve morphological indicators; enable beet bioaccumulation of the largest hair roots beet Accumulation of the most significant and hair roots produced the highest sugar and starch accumulation. Compared with metal halide lamps, in line with the growth of pepper, basil plants under LED wavelength, its stem, leaf anatomic occurred significant changes, and as the light density is increased, the photosynthetic rate of the plant is improved. Composite wavelength LED can cause the number of stomata marigold and sage two plants increased.

LED grow light used in plant cultivation facilities

LED as a plant photoperiod, light morphogenesis induced by a specific wavelength LED lighting can affect the flowering time of plants, the quality and duration of flowering. Certain wavelengths of LED can increase the number of flower buds and flowering plants; some wavelengths of LED can reduce the flowering response, regulation of the flowering stalk length and is conducive to the production of cut flowers and listing. Thus by LED regulation can regulate flowering and the subsequent growth of plants.

LED used in aerospace research Ecological Life Support System

Establishment of Controlled Ecological Life Support System (Controlled Ecological Life Support System CELSS) is the fundamental way to solve the problem of long-term manned space life support, the cultivation of higher plants is an important element CELSS, which is one of the key light.

Based on the special requirements of the space environment, light space cultivation of higher plants used must have a high luminous efficiency, light output suitable for plant photosynthesis and morphogenesis light, small size, light weight, long life, high reliability, safety record and no environmental pollution. Compared with cool white fluorescent lamps, metal halide and high pressure sodium lamps and other light sources, LED light more efficiently converted into active radiation, better plants fill light; in addition it has a long life, small size, light weight and in a solid state and other characteristics, therefore, LED much attention on the ground and plant cultivation in space. Studies have shown that LED lighting system can provide lighting spectral energy distribution, the energy is converted to light for plants over 520 times the efficiency of metal halide lamps.

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