PROBLEM TO BE SOLVED: To solve a problem that large level differences are formed in a gap between soil packing rollers and grooving members for forming grooves into which left and right side edges of a multifilm are inserted, causing the multifilm to come off or to be broken off in conventional work machines which are attached to a tractor or the like and which, while proceeding, perform chemical injection, etc. into the soil, a soil packing process to compact the soil over the entire or substantially entire left and right width by the soil packing rollers, and a multi-process for laying a multifilm 8 over the soil surface.SOLUTION: A soil packing roller 46 and a grooving disk 104 have an adjacently arranged guiding device 151 which leads the soil toward the soil packing roller 46 side while leveling the soil. In the guiding device 151, a guiding member 153 for leveling the soil is disposed ahead of any of the soil packing roller 46 and the grooving disk 104 in the proceeding direction. Inner and outer side portions 153a, 153b in a left-right direction of the guiding member 153 are arranged overlapping each other in a front view with respect to the soil packing roller 46 and grooving disk 104.COPYRIGHT: (C)2014,JPO&INPIT【課題】従来より、トラクタ等に装着して進行しながら土壌に薬剤注入等を施すと共に、鎮圧ローラによって土壌を左右幅略全幅で鎮圧する鎮圧処理と、土壌面にマルチフィルム8を敷設するマルチ処理とを行う作業機では、鎮圧ローラと、マルチフィルムの左右側縁を入れ込む溝を形成する溝切り部材との間の隙間に大きな段差が生じ、マルチフィルムが剥がれたり破れたりする、という問題があった。【解決手段】鎮圧ローラ46と溝切りディスク104には、土壌を均しながら鎮圧ローラ46側に導く流し具151を近接配置し、流し具151にあって土壌を均す流し部材153は、鎮圧ローラ46と溝切りディスク104のいずれよりも、進行方向前方に配置すると共に、流し部材153の左右方向の内外側部153a・153bは、鎮圧ローラ46と溝切りディスク104に対し、それぞれ正面視で重複するように設けた。【選択図】図5
