| 摘要 |
PROBLEM TO BE SOLVED: To realize a farming machine equipped with an easily attachable/detachable tread pressure mitigating tool that can loosen solid soil compacted by a tread pressure of both right and left wheel tires of a tractor in a field right behind the tires, and that can improve water permeability from a surface of the field through a plow layer, a plow sole layer and a subsoil layer with enhanced water retentivity.SOLUTION: Right and left tread pressure mitigating tools 13 and 14 are detachably fixed and fitted to rear surfaces of subsoilers 28 and 32 arranged right behind both wheel tires of a tractor 2. An excavation blade 46 is attached to a lower end of each of the tread pressure mitigating tools 13 and 14, and subsoil of a subsoil layer in a belt-like portion in a field right behind both right and left wheel tires of the tractor 2 is crushed by the tread pressure mitigating tools 13 and 14 in order to improve water permeability and enhance water retentivity. |
