But this approach also has its own defects that electricity could sound. LED can provide plant laboratory need need to grow light, but the current, the efficiency of LEDs is only 28%, which makes the production cost of this method of planting is very high, thus blocking the spread to the rhythm of cheap, rich in vegetables region. However, the Dutch company Philips engineers have recently developed the optical efficiency of 68% of the light emitting diode, the light will significantly reduce costs. In addition, the fluorescent lamp comprises a high pressure sodium lamp and a light source, including the generation of light is expected to solve the problem, both due to its low cost of operation.
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