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handle: 10261/160806
En Aragon les terres irriguées occupaient en 1984-85 une surface de 3 745 km2 (Léon et Delgado, 1988). La proportion est done de 20 % de la surface labourée, proportion légerement supérieure a la moyenne espagnole qui est de 14 %. Ces chiffres ne traduisent pos la véritable importance sociale de l'irrigation, car au centre de l'Ebre, comme dans la plupart des pays méditerranéens et des pays plus arides, l'irrigation est presque la seule possibilité d'une agriculture rentable. En Aragon, l'irrigation est traditionnellement vue comme la principale option capable d'ass.urer la survie du peuple. Les travaux d'irrigation, connus depuis l'époque préromaine, se sont développés tout au long de l'histoire (Bolea, 1978). En général, on irriguait les terrasses quaternaires, qui bordent les fleuves.
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