PROBLEM TO BE SOLVED: To provide an implement capable of performing highly accurately lift control of a work device by a land-leveling float, without complicating a driving system of a land-leveling rotor.SOLUTION: An implement includes a seedling planting device provided liftably through a link mechanism on the rear of a machine body, and lifting following a field based on displacement of a center float 9 in contact with the field, and a ground-leveling device arranged on the furthermore front side than the seedling planting device, lifting together with the seedling planting device, and having a ground-leveling rotor R driven rotatively around a driving shaft core in a lateral posture, in which, in the ground leveling rotor R, a small diameter part Ra is formed on a site adjacent to a convergent part of the center float 9.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2020,JPO&INPIT【課題】整地ロータの駆動系を複雑化させることなく、整地フロートによる作業装置の昇降制御を高精度で行える作業機を構成する。【解決手段】機体の後部にリンク機構を介して昇降自在に備えられ、田面に接触するセンターフロート９の変位に基づき田面に追従して昇降する苗植付装置と、苗植付装置より前側に配置され、苗植付装置とともに昇降し、横向き姿勢の駆動軸芯を中心に駆動回転する整地ロータＲを有する整地装置とを備え、整地ロータＲのうち、センターフロート９の先細り部分に隣接する部位に小径部Ｒａを形成した。【選択図】図５
