| 摘要 |
A gravity feed subterranean system for watering plants at their roots, comprising a vertically disposed reservoir buried at least partially in the ground, a water input line having positive water pressure connected to a float valve constructed and arranged within said reservoir such that when the liquid in the reservoir reaches a desired level, the float valve stops water flow from the input line, a buried output line connected to the reservoir below ground level on one end and plugged at the other, such that the water in the reservoir gravity pressurizes and fills the output line, and at least one hole through the output line.
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