| 摘要 |
PCT No. PCT/GB96/02661 Sec. 371 Date Jun. 30, 1997 Sec. 102(e) Date Jun. 30, 1997 PCT Filed Nov. 1, 1996 PCT Pub. No. WO97/16061 PCT Pub. Date May 9, 1997There is disclosed a seed drilling implement (10) which comprises a frame (11), a coupling device (12) at the forward end of the frame (11), drilling elements (13) mounted on the frame (11) at or near the rear end of the frame, coulters (14) mounted on the frame (11) forwardly of the respective drilling elements (13), forward packer elements (15) mounted on the frame (11) forwardly of the coulters (14) and arranged at least partly to support the frame (11) in order to control the operating depths of the coulters (14) and the drilling elements (13), and an associated rear packer element (16) mounted rearwardly of the respective drilling element (13), and arranged to exert a soil-packing operation over each seeded row formed by the drilling element.
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