Micro-power type bionic stubble cutting mechanism, stubble cutting device, no-tillage planter and stubble cutting method

The invention provides a micro-power type bionic stubble cutting mechanism, a stubble cutting device, a no-tillage planter and a stubble cutting method. The micro-power type bionic stubble cutting mechanism comprises a bionic cutting assembly, a mounting frame and a power transmission assembly, the disc cutter teeth are bionic geometric mechanisms with the geometrical characteristics of the megillidae large jaw, the inner side cutting edge curves of the disc cutter teeth simulate the geometrical characteristics of the inner side of the megillidae large jaw, and the outer side curves of the disc cutter teeth simulate the geometrical characteristics of the outer side of the megillidae large jaw; inner side cutting edge curves and outer side curves of the disc cutter teeth intersect to form tips penetrating into soil; the acute-angle sliding cutter is provided with a concave arc-shaped cutting edge, and the arc-shaped cutting edge is a bionic geometric curve with a cutting tooth-shaped structure on the inner sid