Disclose a kind of aqueous fluid irrigation system that the region for irrigation pipe under protecting field is invaded from root intrusion or microorganism group the irrigation system includes the perforated lid for covering sub-irrigation pipe wherein the lid substantially covers the region of pipe surface and wherein the lid includes by the non-clump wire material of the peak value voidage characterization less than 35 microns and any area of the non-clump wire material is 500 square microns or smaller plane domain includes connected polymer architecture, which remains connected to when being exposed to aqueous fluid.
