PROBLEM TO BE SOLVED: To form orderly ridges by operating a working machine to follow along a direction of trenches, the working machine tilling and listing a field soil surface on which deeply-dug trenches are preliminarily formed.SOLUTION: The working machine comprises: a tilling claw (2) rotor (3) at a rear of a tractor car body (1) a lister (4) that forms lists by listing the tilled soil surface and a press wheel (6) on which a working device (5) for performing seeding work or planting work on the listed soil surface, is mounted and that rotatingly presses the soil, with it located at an upper side of a seeding/planting trench (A) preliminarily, deeply dug in the front side of the tilling claw rotor (3) or, with it fitted in the seeding/planting trench.COPYRIGHT: (C)2014,JPO&INPIT【課題】深堀形態の溝を予め形成した圃場土壌面を耕耘、畝立成形して、作物栽植用畝を形成する作業機を溝の方向に沿って追従させて行わせることができ、整然とした畝を形成する。【解決手段】トラクタ車体(1)の後方に耕耘爪(2)ロータ(3)と、この耕耘土壌面を畝立て成形する畝立器(4)と、この畝立土壌面に播種、又は植付作業する作業装置(5)を装着する共に、前記耕耘爪ロータ(3)の前側には予め深堀に形成された播植溝(A)部の上側部に位置して、又は、この播植溝(A)部内に嵌合して、回転しながら鎮圧する鎮圧輪(6)を設けたことを特徴とする作業機とする。【選択図】図1