PROBLEM TO BE SOLVED: To form a wide space on a floor and to enable an operator to come and go back and forth on the floor and to perform smooth supply of seedlings in a riding rice transplanter.SOLUTION: The seedling transplanter is obtained as follows. A seedling planting apparatus is freely liftably and lowerably connected to the rear of a traveling machine body and the floor (11) where the operator can come and go back and forth in the traveling machine body is installed in the lower part on both the right and the left sides of a handle post (35) on the front side of the traveling machine body. An operating lever (36) for lifting and lowering the seedling planting apparatus and an operating lever (38) for traveling operation are installed operably in the front and rear directions in the upper part on both the right and the left sides of the handle post (35). The operating lever (36) for lifting and lowering the seedling planting apparatus is composed so as to be movable even in the right and left directions and composed so as to be located in the innermost position in the right and left directions when operation is performed to a planting operative state in which the seedling planting apparatus is lowered.COPYRIGHT: (C)2008,JPO&INPIT【課題】乗用田植機において、フロア上に広い空間を形成し、オペレータがフロアを前後に行き来して苗補給を円滑に行なう。【解決手段】走行機体の後部に苗植付装置を昇降自在に連結し、走行機体の前側部のハンドルポスト(35)の左右両側下部には、走行機体の前後に行き来できるフロア(11)を設ける。ハンドルポスト(35)の上部左右両側には、苗植付装置昇降用の操作レバー(36)及び走行操作用の操作レバー(38)を前後方向に操作可能に設ける。苗植付装置昇降用の操作レバー(36)を左右方向にも移動できるように構成し、苗植付装置が下降した植付作業状態への操作時には、最も左右方向内側に位置するように構成する。【選択図】図5