PROBLEM TO BE SOLVED: To provide a drilling tool for planting suitable for drilling work of soil mixed with obstacles such as roots and gravel. SOLUTION: A first inclined side 31 is provided on two or more tip blades 30 provided near the tip of a rotating shaft 10 to proceed while squeezing out obstacles, so that perforation due to clogging of obstacles such as roots can be performed. Prevent stagnation. In addition, the discharge space 40 formed by the second inclined side 32 can also prevent clogging of obstacles. Further, by providing the second inclined side 32 and the connecting side 33, it is possible to suppress the formation of an acute-angled portion that may be a structurally weak portion on the outside of the tip blade 30, which leads to an improvement in the strength of the tip blade 30. .. [Selection diagram] Fig. 1【課題】根や礫などの障害物が混じった土壌などの穿孔作業に適した植栽用穿孔具を提供すること。【解決手段】回転軸１０の先端近傍に設けた２枚以上の先端羽根３０に第１の傾斜辺３１を設けて障害物をかき分けながら進行することで、根などの障害物の詰まりによる穿孔の滞りを防止する。また第２の傾斜辺３２によって形成した排出空間４０によっても障害物の詰まりを防止することができる。また、第２の傾斜辺３２や連絡辺３３を設けることによって、先端羽根３０の外側に、構造上弱部になり得る鋭角部分が形成されることを抑制し、先端羽根３０の強度向上に繋がる。【選択図】図１
