Tube drip irrigation with metering elements (1) inserted therein, which are connected to the wall (3) of the tube drip irrigation (2), the metering elements (1) each comprise, areas input (4), through which the tube (2) reaches the metering elements (1), a dispensing areas (6) formed in each case by a labyrinth channel (7) having a cross section discharge, wherein the labyrinth channel (7) is delimited by two side walls (8, 9), a cover (10) and the wall (3) of the tube drip irrigation (2) and which has place a pressure reduction of flowing water and one area of outlet (13) through which water flows out of the tube drip irrigation (2) through outlet openings (14) formed in the wall the tube (3), wherein the respective outlet area (13) bordering at least one side wall (8) or respectively (9) of the labyrinth channel (7), wherein p or at least one zone of the side wall (8) or respectively (9) is covered and connected by an elastic membrane (15) forming a part of the cover (10), and wherein the side wall (8) or respectively (9) is able to get out of the pipe wall (3) by means of the elastic membrane (15) and a passage is created through which water labyrinth channel (7) reaches the outlet zone (13 ) directly, characterized by the fact that the discharge cross section is not reduced.Tubo de riego por goteo con elementos de dosificación (1) insertados en el mismo, que están conectados a la pared (3) del tubo de riego por goteo (2), cuyos elementos de dosificación (1) comprenden, cada uno, unas zonas de entrada (4), a través de las cuales el tubo (2) llega a los elementos de dosificación (1), unas zonas de dosificación (6) formadas, en cada caso, por un canal de laberinto (7) que tiene una sección transversal de descarga, en el que el canal de laberinto (7) está delimitado por dos paredes laterales (8, 9), una cubierta (10) y la pared (3) del tubo de riego por goteo (2) y donde tiene lugar una reducción de presión del agua que fluye, y unas zonas de salida (13) a través
