Device for cutting stalk, digging rootstalk and ditching

The invention discloses a device of cutting straw, removing stubble and digging trench which is installed in the no-tillage seeding machine, and comprises knife pivot (2), one or more circular cutting discs (1) installed in the knife pivot, with the characteristic installation of inclined fixation, for which the circular cutting disc can not only cutting straws, chopping root stubble, softening the soil 8-10 cms under soil surface and digging trench, but also can remove the straw on the seeding belt which is convenient for fertilizing and seeding, and realizes the no-tillage of wheat in field with straw covered and root stubble untreated. The device is characterized by the good working quality, high efficiency, and simple structure, suitable to production and low cost.