| 摘要 |
The invention is a soil preparation device for use with a planter row unit of the type which includes a front face, a furrow opener to the rear of the front face, a seed dispenser, and a furrow closer to the rear of the furrow opener and seed dispenser. The device comprises: a bracket having a longitudinal axis; a pair of front discs rotatably mounted to the bracket on opposite sides thereof, each front disc being angularly oriented with respect to the bracket axis so as to have a leading edge closely adjacent to the bracket axis and a trailing edge transversely spaced from such axis; a pair of rear discs rotatably mounted to the bracket on opposite sides thereof, each rear disc being angularly oriented with respect to the bracket axis so as to have a leading edge transversely spaced farther from the bracket axis than the trailing edge of each front disc, and a trailing edge transversely spaced from but closer to the bracket axis than the leading edge of such rear disc; and a mounting member, extending from and integrally connected to the bracket, for use in removably mounting the bracket to the front face of said planter row unit so as to position the rear discs adjacent to the front face and at least portions of the front discs in front of the rear discs.
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