Water-surface efficient wave-preventing and wave-reducing floating island net technology for planting higher plants to restrain algal bloom

The invention provides a water-surface efficient wave-preventing and wave-reducing floating island net technology for planting higher plants to restrain algal bloom, and the technology can be used for greatly reducing brushing damages to aquatic plants and hygrophytes by water flows, stormy waves, ship waves and the like under the condition of different substrates and variable water levels, and can support ecological rehabilitation of a water body, improvement of the water quality and ecological bank protection. The water-surface efficient wave-preventing and wave-reducing floating island net technology takes a porous cuboid floating block-wave-reducing floating island core body which is communicated with a three-dimensional network pipeline as a primary unit for absorbing wave energy; then the primary unit is combined into a three-dimensional porous rigid floating body-rigid wave-reducing single body with greater scale and strength and is finally assembled to be flexibly fixed on the water surface; and a thr