Plant growth lamp is an artificial light source, usually an electric light source, which aims to stimulate plant growth by emitting electromagnetic spectra suitable for photosynthesis. Plant lamps are used in applications where there is no natural light or where supplementary light is needed. For example, in winter, lights are used to extend the time for plants to receive light when the possible daylight time may not be sufficient to achieve the desired plant growth. If plants don't get enough light, they will grow in vain.
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