PROBLEM TO BE SOLVED: To provide an agricultural work machine capable of preventing an extendable ground-leveling body from returning to a folded non-working state at the time of work.SOLUTION: An agricultural work machine 11 comprises a tilling body 18 for performing tilling work and a ground-leveling body 23 for performing ground-leveling work at the rear of the tilling body 18. In the ground-leveling body 23, an extendable ground-leveling body 31 is provided rotatably around a rotation fulcrum. A tension spring 32 for biasing the extendable ground-leveling body 31 so as to be in an extended working state and a folded non-working state is attached. A ground-leveling side attachment part of the tension spring 32 is positioned on the outer side than the rotation fulcrum during the extended working state of the extendable ground-leveling body 31, and positioned on the inner side than the rotation fulcrum during the folded non-working state of the ground-leveling body 31.【課題】作業時に延長整地体が折畳非作業状態に戻ってしまうのを防止できる農作業機を提供する。【解決手段】農作業機11は、耕耘作業をする耕耘体18と、この耕耘体18の後方で整地作業をする整地体23とを備える。この整地体23には、延長整地体31を回動支点を中心として回動可能に設ける。この延長整地体31を展開作業状態および折畳非作業状態となるように付勢する引張ばね32を取り付ける。引張ばね32の整地体側取付部は、延長整地体31の展開作業状態時には回動支点よりも外側方に位置し、延長整地体31の折畳非作業状態時には前記回動支点よりも内側方に位置する。【選択図】図１
