The asymmetrical head of a shovel incorporates a vertically oriented edge extending upwardly from the tip of the head to a recessed leading edge. The construction of the head permits it to function both as a pivot and as a lever, as well as facilitating the initial penetration of the head in soil.一種鏟的不對稱鏟頭,其納入一垂直定向邊緣,該垂直定向邊緣自該頭部的尖端向上延伸至凹入前緣。該頭部之構造允許其既充當一樞軸又充當一槓桿,以及有助於該頭部初始戳入泥土中。