PROBLEM TO BE SOLVED: To provide a ground making float for a rice field working machine, which is enabled to perform the planting satisfactorily even with a width corresponding to the whole ridge by suppressing still more the adverse effect on the adjacent ridge due to a mud push.SOLUTION: Wave preventing plates 30 for suppressing the diffusion of a mud wave to the transverse outsides of a ground making member 20 are arranged at such a spacing d from transversely outermost side end edges 21b of the ground making member 20 as to allow the mud wave established according to the progress of the ground making member 20 to pass to the rear side, and are made longer than the longitudinal length at the transversely outermost side end edges 21b of the ground making member 20.COPYRIGHT: (C)2014,JPO&INPIT【課題】全条に相当する横幅を有しながら、泥押しによる隣接条への悪影響をより一層抑制して、植付が良好に行われ易い水田作業機の整地フロートを提供する。【解決手段】整地体20の横外方への泥波の拡散を抑止する波除け板30が、整地体20の横最外側端縁21bとの間に、その整地体20の進行に伴って生じた泥波の後方側への通過を許す程度の所定間隔dを隔てて配設されているとともに、整地体20の横最外側端縁21bにおける前後方向長さよりも長く形成されている。【選択図】図4
