PROBLEM TO BE SOLVED: To provide a cultivation method using a cultivation base material for seaweed belonging to Porphyra generating a thallus directly from a filament.SOLUTION: On a cultivation base material 1 used in a cultivation method for seaweed, projections 11 containing calcium carbonate as a main component, and formed by crushing coral or the like which is one of bones and fossils of a plurality of organisms by a prescribed size are fixed on a base 21 with a projection fixing material 31 which is a cement, an adhesive or the like. A free filament of seaweed belonging to Porphyra generating a thallus directly from a filament to the cultivation base material 1 is finely shredded by a mixer, and the shredded filament is sowed on top surface of the cultivation base material 1 in a water tank filled with sea water. The filament is perforated in each projection 11 to be raised for 1-10 months, and after then, the cultivation base material is installed on sand or rock land which becomes tideland during low tide.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】糸状体から直接葉状体を生じるアマノリ属に属する海苔用の養殖基材を用いた養殖方法の提供。【解決手段】海苔用の養殖方法に用いる養殖基材1は、基台21に炭酸カルシウムを主成分とする複数の生物の骨格や化石の1つであるサンゴ等を所定の大きさに破砕した突起物11が、セメントや接着剤等である突起物固定材31で固定されており、前記養殖基材1に糸状体から直接葉状体を生じるアマノリ属に属する海苔のフリー糸状体をミキサーで細断したものを海水を満たした水槽内に養殖基材1の上面に播き、1~10か月程度かけて糸状体を突起物11の内部に穿孔させて育成した後、干潮時には干潟となる砂や岩の上に設置する。【選択図】図1
