| 摘要 |
A drip irrigation hose (2) formed with a plurality of outlets (48) for discharging the water at longitudinally-spaced locations along the length of the hose (2) includes a plurality of emitter elements (4) secured to said hose at longitudinally-spaced locations along its length to define a plurality of turbulent flow passageways each in communication with the interior of the hose (2) for discharging water from a hose outlet (48) at a slow rate. Each of the turbulent flow passageways are defined by a relatively elastic first material (41-47) coextruded with a relatively stiff second material (5) both bonded to the hose with the relatively elastic material (41-47) being pressure-deformable as compared to the relatively stiff material to change the turbulent flow passageways of each emitter element (4) in response to the pressure of the water in the hose at the respective emitter element (4). |
