PROBLEM TO BE SOLVED: To provide a paddy field working machine capable of preventing a mud-pushing action even by a land-leveling float having a width corresponding to the planting width of the whole rows, reducing the influence on already planted seedlings, and enabling the plantation to be carried out well.SOLUTION: The land-leveling float 11 having the width corresponding to the planting width of the whole rows is installed, and a belt-shaped land-leveling part A exhibiting a belt shape along the width direction is formed over the whole or nearly whole length in the width direction on the bottom face of the land-leveling float 11. Mud-releasing recessed parts 27A recessed upward for introducing mud rearward are formed in the belt-shaped land-leveling part A.COPYRIGHT: (C)2012,JPO&INPIT【課題】全条の植付幅に相当する横幅を有する整地フロートであっても、泥押しを抑制できて、既植え苗に対する影響を抑え、植付が良好に行われる水田作業機を提供する。【解決手段】全条の植付幅に相当する横幅を有する整地フロート11を設け、整地フロート11の底面における横幅方向の全長又は略全長に亘って、横幅方向に沿った帯状を呈する帯状整地部Aを形成し、帯状整地部Aに、後方に泥土を誘導すべく上方に凹入する泥逃がし凹入部27Aを形成してある。【選択図】図6