| 摘要 |
A seed planter is pulled behind a tractor and deposits seeds into an underlying trench in soil. The seed planter (10) has a seed hopper (20); a seed meter (30) to meter the flow of seeds (90) to be planted which drops seeds (90) into a seed conveyor (50); a trench former (40) having a pair of rotating seed placement discs (51, 52) located behind the trench forming discs (41, 42) to convey seeds (90) from the seed meter (30) into the trench (70) at regular intervals. The seed placement discs (51, 52) having resilient annular rings (53, 54) are compressed together during a portion of their rotation below the seed meter (30) and being spaced apart at a later portion of their rotation.
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