| 摘要 |
A water retention structure is provided below the surface of the soil in which plants are to be grown. The soil is excavated to a depth d below the plant's root structure and one, or more, water impervious polymeric sheet 10 is placed in the excavation. Each sheet has raised lands for supporting a non-woven filter cloth 10. Between the polymeric sheet and the cloth filter and among the raised lands, valleys or depressions are defined. Excess water is collected in these valleys for aspiration by the plant roots, and any additional water is fed to a storage reservoir, where the water can be pumped out for use elsewhere, and/or for use in irrigating the same soil during periods of reduced rainfall.
|
