PROBLEM TO BE SOLVED: To provide a method and apparatus of reviving aquatic plants by activating, sprouting, growing the seeds of aquatic plants in dormancy in the bottoms of the sea, lakes and rivers, i.e., emergent plants, floating plants and/or submerged plants.SOLUTION: An aquatic plant seed in a sprouting time in the dormant state in the bottom of water is irradiated with the light with a wavelength promoting sprouting of the seed to sprout the seed, the sprouted aquatic plant seed is continuously irradiated with the light with the wavelength to grow the sprouted aquatic plant, the irradiation of the light with the wavelength is stopped when the tip of the aquatic plant reaches the water area of a growable illuminance, and thereby the belt of aquatic plants can be revived and water quality can be purified most efficiently.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】海、湖及び河川の水底の休眠中の水生植物、即ち、抽水植物、浮葉植物及び/又は沈水植物の種を活性化させて、発芽させ、成長させて、水生植物を復活させる方法及び装置を提供する。【解決手段】発芽時期にある水底の休眠状態の水生植物の種子に、該種子の発芽を促進する波長の光を照射して、前記種子を発芽させ、前記発芽した水生植物の種子に前記波長の光の照射を続けて、前記発芽した水生植物を成長させ、該水生植物の先端が、成長可能な照度の水域に達したところで、前記波長の光の照射を停止することにより、水生植物帯を復活させることができ、最も効率的に水質浄化を行うことができる。【選択図】図1
