PROBLEM TO BE SOLVED: To allow an operator to perform the work of overriding a ridge with the front upward inclination of a machine body at least a prescribed inclination angle and the planting work to a limit state in which a planting implement liftably connected to the rear of the machine body escapes from a field while riding on a sulky rice planter.SOLUTION: The transplanter includes a control means 61 for controlling the automatic lifting of the planting implement 5 in such a way that a reference posture of a float 23 is changed from a reference value to a front lowering state during the automatic lifting control to continue the automatic lifting control, and that the float 23 is grounded while the planting is suspended if the automatic lifting control is not executed when the front upward inclination at the prescribed inclination angle or more of the machine body is detected by a pitching sensor 69 for detecting the inclination of the machine body in the longitudinal direction.COPYRIGHT: (C)2013,JPO&INPIT【課題】機体の前上がり傾斜が所定の傾斜角以上になる畦越え作業や、機体の後部に昇降自在に連結した植付作業機が圃場から脱出するぎりぎりの状態(植終い)までの植付作業を、オペレータが乗用型田植機に搭乗した状態で行えるようにする。【解決手段】機体の前後方向の傾斜を検出するピッチングセンサ69が所定の傾斜角以上の機体の前上がり傾斜を検出している時、自動昇降制御中にはフロート23の基準姿勢を基準値かた前下がり状態に姿勢変更して自動昇降制御を継続し、自動昇降制御中でなければ植付を停止した状態でフロート23を接地させた植付作業機5の自動昇降制御を実行する制御手段61を設ける。【選択図】図7
