| 摘要 |
A seed metering device includes a roller nip for mounting beneath a seed reservoir. The nip is formed by first and second opposed facing nip forming surfaces mounted beneath, and aligned with, the reservoir wherein the first nip forming surface is a radially-outer surface of a soft resilient roller. The roller is rotatable by a roller drive in a first rotational direction so as to draw down through the nip, by frictional engagement of the seeds in the nip with the surface of the resilient roller, seeds falling into the nip. The nip is an elongate, curved, thin wedge-shaped nip providing an increased dwell time for seeds being compressed in the nip.
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