PROBLEM TO BE SOLVED: To reduce the load applied to a grounding wheel or the rear side part of the grounding wheel as much as possible while keeping the suitable weight balance in the direction of travel of the machine, even if the load of the film roll increases.SOLUTION: A machine 5 has a tilling part 6 for tilling, a furrow molding part 7 for molding a furrow using the tilled soil, a multifilm laying part 8 for pulling out a multifilm 82 from a film roll 81 and for laying so as to cover a furrow 10, and a grounding wheel 9 which can support the machine 5 freely, the tilling part 6 and the furrow molding part 7 being arranged in order from the front in the direction of travel of the machine 5, the grounding wheel 9 being arranged at the rear side of the tilling part 6 in the direction of travel of the machine 5, and the film roll 81 being arranged at the front side of the grounding wheel 9 in the conditions that its center of gravity does not overlap with the grounding wheel 9 in the direction of travel of the machine 5.SELECTED DRAWING: Figure 2【課題】フィルムロールの荷重が増大しても、機体の進行方向での重量バランスを適切に保ちながら、接地輪や接地輪よりも後方側部位にかかる荷重を極力小さくすること。【解決手段】機体５には、耕耘を行う耕耘部６と、耕耘された土を用いて畝を成形する畝成形部７と、フィルムロール８１からマルチフィルム８２を繰り出して畝１０を被覆するように敷設するマルチフィルム敷設部８と、機体５を支持自在な接地輪９とが備えられ、機体５の進行方向において、前方側から、耕耘部６、畝成形部７の順に配置され、接地輪９は、機体５の進行方向で耕耘部６よりも後方側に配置され、フィルムロール８１は、その重心が機体５の進行方向において接地輪９と重複しない状態で接地輪９よりも前方側になるように配置されている。【選択図】図２
