PROBLEM TO BE SOLVED: To provide a tillage implement having improved land levelling performance.SOLUTION: A tillage implement 2 includes a rotary 21 and a rear cover 23 levelling a field tilled by the rotary 21. A soil pressing face 23S and a soil levelling face 23T are formed in a ground levelling plate 231 by bending an intermediate part of the ground levelling plate 231 constituting the rear cover 2. A curved face 23R connecting the soil pressing face 23S and soil levelling face 23T includes a center position of its curve radius R (height Hd of a curve center C) lower than average height Hs of soil piled up by being pressed by the soil pressing face 23S.SELECTED DRAWING: Figure 16COPYRIGHT: (C)2017,JPO&INPIT【課題】整地性能を向上させた耕耘作業機を提供する。【解決手段】ロータリー21と、前記ロータリー21によって耕された圃場を均すリヤカバー23と、を備える耕耘作業機2において、前記リヤカバー2を構成する整地板231の中途部分が曲げられて当該整地板231に土押面23Sと土均面23Tが形成されており、前記土押面23Sと前記土均面23Tをつなぐ曲面23Rは、その曲げ半径Rの中心位置(曲げ中心Cの高さHd)が前記土押面23Sに押されて盛り上がった土の平均高さHsよりも低い、とした。【選択図】図16
