| 摘要 |
<p>The edging has a circular shaped plate (2) whose center is provided with an opening for passage of tree (1) or any plant. The plate has a retaining wall parallel to a peripheral edge of the plate, where the wall raises to general orientation of the plate in a transverse manner. The wall is formed of a series of panels juxtaposed with each other. A reception surface receives plant and/or mineral and/or synthetic particles e.g. pine barks. Semi-plates are assembled around stem of a shaft, where the semi-plates are formed from a single piece of injected plastic material e.g. polypropylene.</p> |
