Problem to be solved: to improve the crushing property of the tillage nail and to improve the amount of the pawls around the soil, to enable high-speed work, and to reduce overlapping work at the same place.Solution 1 is a tilled pawls 1 which is rotated and cultivated for the soil, and has a plate-like vertical blade part 3 extending from the base part 2, a lateral blade part 4 which is bent by bending from one side of the longitudinal blade part 3 to bend one side, and an orthogonal blade part 5 made up of a plane extending from one side edge part 4 to one side It is curved in the direction opposite to the rotational direction from the longitudinal blade part 3 to the transverse blade part 4, and has a blade portion at the front side in the rotation direction from the longitudinal blade part 3 to the transverse blade part 4 and the orthogonal blade part 5, and the bending start line P1 of the longitudinal blade part 3 and the transverse blade part 4 and the width of the orthogonal blade part FaceThe reference character 5C is substantially parallel to the straight line passing through the center of the base 2 perpendicular to the axis of rotation of the tilling claw shaft O1, by means of an armature nail inclined toward the rear side in the rotational direction from 12 to 22 degrees.Diagram【課題】耕耘爪の砕土性を向上するとともに、耕耘爪が土を持回る量を向上させ、高速作業を可能とし、同一箇所での重複作業を軽減することを可能とする。【解決手段】回転させ土壌を耕耘する耕耘爪1であって、基部2から延びる平板状の縦刃部3と、縦刃部3から一側方に湾曲して曲げられて延びる横刃部4と、横刃部4から一側方に延びる平面からなる直交刃部5とを有し、縦刃部3から横刃部4にかけて回転方向と逆向きに湾曲されているとともに、縦刃部3から横刃部4及び直交刃部5にかけての回転方向前側に刃部を有し、縦刃部3と横刃部4の折り曲げ開始線p1と直交刃部5の平面部5cは略平行であり、耕耘爪軸o1の回転軸線と直交する基部2の中心を通る直線に対し、回転方向後方側に向けて12度乃至22度角に傾斜している耕耘爪による。【選択図】 図1
