| 摘要 |
<p>A seed firming wheel assembly (66) is supported in close-coupled relationship with the rear portion of the paired discs (36, 38) of an opener (30) to gently press deposited seeds down into the bottom of a V-shaped trench formed by the discs (36, 38). The mounting arm (94) of the assembly (66) is configured in a manner to minimize the accumulation of mud and trash residue, while the wheel (130) itself may take the form of a solid, circular block of ultra-high-molecular-weight polyethylene with slick sides (218) to reduce soil adherence or a spoked, molded plastic wheel (118) having open spaces (134) between the spokes to permit soil pass-through.</p> |
