PROBLEM TO BE SOLVED: To solve a problem that, when a broad ridge wider than the tilling width is formed with a wing hiller or a ridging unit on a tilling soil surface plowed by a tilling tine rotor attached at the rear side part of a tractor, since it is necessary to perform culturing soil and ridging work at broad interval by attaching the wing hiller at the rear side part of the tractor as an independent distance on the tilling work distance, much work distance is required, resulted in inefficiency.SOLUTION: By arranging a splinter wing hiller 4 which plows the lateral end of tilling soil in which tilling is done by the tilling tine rotor 2 toward an inner side and a culture soil plate 5 which is attached to the rear side of the splinter wing hiller 4 to perform culture soil guide of the soil of a culture soil groove portion to lateral sides to the undersurface of a rear cover 3 in the back of one side of a tilling tine 1 rotor 2 to construct a ridging unit 6, wherein as a result of a reciprocating work run of the ridging unit 6 the ridge forming is completed for broad width region wider than the width of tilling tine rotor 2.COPYRIGHT: (C)2013,JPO&INPIT【課題】 トラクタの後側部に装着の耕耘爪ロータによって耕耘する耕耘土壌面を、培土器乃至畦立器等によって、この耕耘幅よりも広い広幅畝を形成する場合は、トラクタの後部に培土器を装着して培土畝立作業を広幅間隔に、前記耕耘作業行程とは独立行程として行うため多くの作業行程を要し、非能率的である。【解決手段】 耕耘爪1ロータ2の一側後部のリヤカバー3の下面に、この耕耘爪ロータ2によって耕耘される耕耘土壌の横端部を内側へ培土する片培土器4と、この片培土器4の後側に取付けられて培土溝部の土壌を左右両側へ培土案内する培土板5を設けて畝立装置6を構成し、この畝立装置6の往復作業走行により耕耘爪ロータ2幅よりも広幅域の畝立成形を行う。【選択図】 図1
