The utility model belongs to the technical field of
straw returning machines and tools, and particularly relates to a concentrated deep-burying
straw returning
machine and tool for black soil areas in northeast China, which comprises a
machine frame and a vehicle body, the
machine frame is provided with a picking device, a smashing device, a soil covering wheel and a soil smashing press wheel, and the smashing device comprises a smashing cavity and a smashing cutter set located in the smashing cavity. A smashing cavity is formed in the rack, a discharging
pipe is arranged at the output end of the smashing cavity, a ditching
injection device is further arranged below the rack and comprises a deep
scarification handle and a bionic sleeve, the deep
scarification handle is located in front of the bionic sleeve, the deep
scarification handle is fixedly connected with the bionic sleeve and the rack, the bionic sleeve stretches into a
ditch formed by the deep scarification handle, and the bionic sleeve is fixedly connected with the rack. And a blanking chamber is formed in a sleeve cavity of the bionic sleeve and is connected with the crushing chamber by virtue of a blanking
pipe. According to the utility model, the bionic sleeve is utilized to play a supporting role, so that the formed
ditch is prevented from rebounding, straws can fall into the deep part of the
ditch to form deep burying, and a better
soil fertility increasing role is played.