以地质构造而言,由于纪伊半岛位处日本西南,中央构造线的升带,所以其地质结构是由古生层往中生层平行过渡状态,因受造山运动强列切割作用的影响,从而形成大量的地形破碎地势非常陡峭的“V”字形山谷。因此,农耕地非常缺乏,据国家的历史记载,此地区 As far as the geological structure is concerned, because the Kii Peninsula is located in the southwest of Japan and rises along the central tectonic line, its geological structure is parallel to the Mesozoic transition from the Paleozoic to the Mesozoic. Due to the strong cutting effect of orogenic movement, Thus forming a large number of “V” shaped terrain with very steep terrain. Therefore, farmland is very scarce, according to historical records of the country, this area