System for the artificial irrigation and drainage of a vegetation layer

摘要

System for the artificial irrigation and drainage of a vegetation layer, having at least one hose which is arranged in the vegetation layer and has a plurality of openings distributed on the hose casing, and having a sheath which encloses the hose, the sheath enclosing the hose being a tube which exhibits openings and whose internal diameter is considerably greater than the external diameter of the hose, and a water-impermeable barrier layer being arranged beneath the vegetation layer.