A plantation growth lighting system comprised of laser diode (LD) array and automatic control unit is disclosed herein. The lighting system of the present invention is used for multi-layer hydroponic or soil-based plantation growth facilities to substantially improve the intensity of light. Since the light can be controlled to only distribute over the plants, the energy efficiency and the light intensity control of the present invention will be much better than the conventional lighting system in plantation growth facilities. As a result, the plurality of vegetal species will grow well with higher density within/without a closed environment.
