| 摘要 |
<p>The invention provides a machine for performing cultivation under plastics, wherein there is a framework, a ploughshare to make a furrow in the ground, a support bearing a roll of plastic sheet and arranged in such a way that the sheet is positioned on the ground above the furrow, means for perforating the sheet before positioning same on the ground, perforations being made in the sheet vertical to the burrow.</p> |
