The present invention relates to a variable ridging device for soil preparation. The variable ridging device of the present invention is installed in an agricultural device for soil preparation, wherein the agricultural device comprises: a main frame connected with a tractor in order to be towed； and a rotary unit supported by the main frame. The variable ridging device comprises: a support beam fixated to the main frame, is horizontally disposed on the rear of the rotary unit, and has a rectangular cross-sectional shape in a longitudinal direction； and a plurality of ridging units mounted on the support beam through a holding means to be able to be attached and detached, can be moved along a longitudinal direction of the support beam, is driven when the main frame is towed, and forms a furrow by cultivating the soil. The variable ridging device for soil preparation of the present invention has the ridging units disposed on the rear of the rotary unit such that soil after a rotary work is ridged. Accordingly, the load of the ridging units is small, and the burdens due to deformation and breakdown are reduced. Moreover, three or more ridging units can simultaneously be used, and the relative position of the ridging units can be adjusted if needed, such that a furrow having a width which is most appropriate for the growth of a plant can rapidly be formed in accordance to the type of plant. Also, the ridging units can very easily be attached and detached, such that the position of the ridging units can easily be adjusted, and the number of installed ridging units can easily be added or subtracted.본 발명은 정지작업용 가변 휴립장치에 관한 것이다. 이는 트랙터에 연결되어 견인되는 메인프레임과, 상기 메인프레임에 지지되는 로터리부가 포함된 정지작업용 농기계에 설치되는 것으로서, 상기 메인프레임에 고정되되 상기 로터리부의 후방에 수평으로 배치되고 길이방향으로 사각형의 단면형상을 갖는 지지빔과； 홀딩수단을 통해 상기 지지빔에 착탈 가능하게 장착되며, 지지빔의 길이방향으로 이동 가능하고, 메인프레임의 견인시 주행하며 토양을 갈라 두둑을 형성하는 다수의 휴립기를 포함한다.상기와 같이 이루어지는 본 발명의 정지작업용 가변 휴립장치는, 휴립기가 로터리부의 후방에 배치되어 로터리작업이 완료된 토양을 휴립하므로 그만큼 휴립기의 부하가 작아 변형이나 파손의 부담이 적고, 또한,
