Chinese yam digging method

The invention discloses a Chinese yam digging method. The Chinese yam digging method comprises the following steps: 1) digging a pit at one end of a Chinese yam planting ridge, and storing soil for use; 2) determining the growth position of a Chinese yam; 3) digging soil on the two sides of the Chinese yam through two spiral drilling tools of a special Chinese yam digging device at the same time; 4) conveying the soil into the pit through the spiral drilling tools, and conveying soil in the lower layer to the upper layer; 5) continuing digging downwardly through the special Chinese yam digging device till the Chinese yam is excavated out; 6) repeating the step 2) to the step 6). The Chinese yam digging method can quickly harvest the Chinese yams, is time-saving and labor-saving, and can effectively avoid damage, breakage and the like of the Chinese yams in the harvesting process so as to ensure the quality of the Chinese yams. 本发明公开了种山药挖掘方法，包括如下步骤：1）在山药种植垅的端开挖坑，并将土壤存储备用；2）确定山药的生长位置；3）通过山药专用挖掘装置的两螺旋钻刀同时对山药两侧的土