A survey on the possibilities of the reclamation of hydromorphic soils of the project "Huallaga Central, Chiriyacu and Nieva", Peru

alluvial soils arroz control de inundaciones drainage drenaje flood control geomorfologia geomorphologie geomorphology hydromorphic soils interfase sedimento agua irrigation organic soils perfil del suelo precipitation profil du sol reclamation rice riego riz soil profiles sol alluvial sol hydromorphe sol organique suelo aluvial