| 摘要 |
<p>ION SOWER A precision sower is described which has the capability of sowing seeds in single in rows parallel to the direction of travel of the sower and in parallel rows normal to the direction of travel. The sower comprises a hollow rotatable drum provided with series radial holes, each series being in the same plane, and an internal source of vacuum. Pins positively displace seeds from the holes at a predetermined point in the rotation of the drum. The pins are actuated by a cam surface during normal rotation of the drum. The sower can be used in association with rollers, coulters and other implements to assist in the sowing operation. This device enables seeds to be sown singly and to be precisely spaced both along the path of travel and transversely to that path.</p> |
