The invention discloses a plug-in artificial algal
reef and a method for constructing an algal field by using the same. The algal
reef comprises a
solid base and an attached block movably connected to the
solid base through a connecting rod, wherein the attached block is semispherical and has a
rough surface, thereby meeting the requirement for the attachment of
algae germ cells; and both the
solid base and the attached block can be formed by one-step concrete pouring. When the algal field is constructed, the
solid base is put into the sea and is soaked for a period of time; meanwhile, the attached block is dipped into
seawater containing
algae germ cells, and the attached block subjected to species introduction is movably connected to the
solid base through the connecting rod after the
algae germ cells are attached to the attached block. The plug-in artificial algal
reef is convenient to use and is firm and durable, and algae can be prepositively fixed on the attached block so that germ cells diffused by algae sporophytes continue growing on the
solid base; the germ cells is prevented from being swallowed by
natural enemies, and the success rate of algae introduction is increased; the
rehabilitation of the algal field can be realized, and a foundation is laid for building a new algal field.