PROBLEM TO BE SOLVED: To eliminate trouble in turning operation efficiency such that an operator must perform turning on and off operation of driving of an implement and lifting and lowering operation of the implement other than turning steering operation of a machine body during turning and cannot be devoted to steering operation during turning.SOLUTION: The riding type seedling transplanter is equipped with a seedling transplanting implement 3 freely liftably and lowerably installed in a traveling vehicle 1 provided with a right and a left front wheels 6 for steering as shown in figure 1. The riding type seedling transplanter is equipped with a controller 170 for operating an information means B such as an information buzzer or an information lamp during automatic turning mode for issuing a command to lift the seedling transplanting implement 3 and lifting the seedling transplanting implement 3 when the right and left front wheels 6 are operated to steering to a prescribed angle or above, computing the traveling distance with a traveling distance computing means and issuing a command to lower the seedling transplanting implement 3 according to the traveling distance.COPYRIGHT: (C)2007,JPO&INPIT【課題】旋回時に、操縦者は機体の旋回操向操作以外に、作業装置の駆動の入り切り操作や作業装置の上昇・下降操作をしなければならず、旋回時の操向操作に専念できず、旋回操作性の点において課題があった。【解決手段】操向用の左右前輪6を設けた走行車両1に苗移植作業装置3を昇降自在に装着した乗用型苗移植機において、左右前輪6を所定角度以上に操向操作すると苗移植作業装置3を上昇させる指令を出力して苗移植作業装置3を上昇させ、且つ、走行距離算出手段にて走行距離を算出して、該走行距離に応じて苗移植作業装置3が下降する指令を出力する自動旋回モード中に、報知ブザーや報知灯などの報知手段Bを作動させる制御装置170を設けた乗用型苗移植機。【選択図】図8
