PROBLEM TO BE SOLVED: To provide a method and structure for farming capable of rooting a floating larva of a bivalve submerging in sand, and growing the larva to a young shell or adult shellfish.SOLUTION: A fence 1 is prepared in a location where water flows from the flux or the reflux. A perforated tube 2 is installed inside the fence 1. A power-particle body 31 with a large diameter is filled at the bottom of the fence 1, and a power-particle body 32 with a small diameter is filled thereon. A separation net 4 is provided between the power-particle body 31 and the power-particle body 32. The upper surface of the fence 1 is covered with a net-shaped member 5. The power diameter of the power-particle body 31 is preferably within a range of 20-50 mm, and the power diameter of the power-particle body 32 is preferably within a range of 1-19 mm. The entire or part of the power-particle body 32 is preferably comprised of either an oyster shell processed solid material or a crushed rock of lime stone.【課題】潜砂性二枚貝の浮遊幼生を着底させて稚貝又は成貝にまで成長させることのできる養殖方法及び養殖用構造物を提供する。【解決手段】潮の干満により水が流動する場所に囲い１を作製し、囲い１内に有孔管２を敷設する。そして、囲い１内の下部に粒径の大きい粉粒体３１を充填し、その上に粒径の小さい粉粒体３２を充填する。粉粒体３１と粉粒体３２との間には分離用ネット４を設ける。そして、囲い１の上面を、網状部材５で覆う。粉粒体３１の粒径としては２０ｍｍ～５０ｍｍの範囲が好ましく、粉粒体３２の粒径としては１ｍｍ～１９ｍｍの範囲が好ましい。また、粉粒体３２の全部又は一部を、カキ殻加工固形物及び石灰石の砕石の少なくとも一方とするのが好ましい。【選択図】図２
