| 摘要 |
The present invention relates to an opening disk for a seed drill. The opening disk has waves in a manner known to those skilled in the art. These waves allow the disk to work a relatively broad strip of earth. According to one feature of the present invention, the disk advantageously has at least one notch on its circumference. The purpose of the notch(es) is to increase the ability of the disk to penetrate the ground.
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