PROBLEM TO BE SOLVED: To provide a rice transplanter capable of correcting the displacement between a farm field contact area that a float detects and an actual farm field surface by detecting the farm field surface, and detecting an appropriate planting height, thereby preventing improper planting.SOLUTION: A rice transplanter equipped with a float that detects a farm field contact area includes a sensor provided separately from the float, for detecting a farm field surface. The sensor includes a detection part for tracking the farm field surface, a swing shaft included in a support part that swingably supports the detection part, and a potentiometer sensor for measuring a swing angle of the swing shaft, and detects the height of the farm field surface on the basis of the swing angle.COPYRIGHT: (C)2016,JPO&INPIT【課題】圃場表面を検知することで、フロートの検知する圃場接地面と実際の圃場表面とのズレを修正し、適正な植付高さを検出し、植付不良を防ぐ田植機を提供する。【解決手段】圃場接地面を検知するフロートと、該フロートとは別に設けられ、圃場表面を検知するセンサを備える田植機であって、前記センサは、前記圃場表面を追従する検知部と、該検知部を揺動自在に支持する支持部に含まれる揺動軸と、該揺動軸の揺動角度を計測するポテンショセンサとを有し、該揺動角度に基づいて前記圃場表面の高さを検知する。【選択図】図3
