| 摘要 |
An irrigator has an annular reservoir, open radially inwardly. A wall on the inside of the reservoir closes the open inner side and contains a bed of soil for growing plants. Wicks trickle moisture from the reservoir into the soil bed. In preferred versions of the irrigator, an impermeable plastic insert is designed to fit into the centre of a scrap vehicle tire as the reservoir. When inserted forcefully into one side of the tire, the tire is locked firmly onto the insert on one side to form a reservoir that has an opening between the opposite side of the tire and an upwardly tapered centre wall of the insert. When set into the ground, plants may be grown in the centre of the insert with moisture being fed into the centre growing zone from within the tire by wicks leading through appropriate slots in the insert wall.
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