The plowshare surface has 18, 20, 20A, 25, 27, 30, 35 and other types, which can be applied to sandy loam, loam and clay all over the country. The specific resistance of soil is no more than 1.2kg/cm2 for dry tillage in mature land. After ploughing, the land surface is flat and the broken soil has a good covering performance, which can effectively bury the surface organic matter into the bottom of the ditch, rapidly decompose, increase the soil strength, and well maintain the soil structure quality.