The facility is of the type that has a pair of side bars (1,1) acting as inclined supports for an upper sheet (2) with openings (8) for inserting the plants, a closed lower sheet (4) acting as a collector, and at least one intermediate sheet (3) with openings determining a cascade trajectory for the water with the nutrients. The invention consists in providing a multi-layer upper sheet (2) comprising preferably four layers (2a, 2b, 2e and 2d), which together define narrow channels (7) for selective use, such that at the time of insertion, the root of each plant is placed in a channel (7) different from that used by the adjacent plants. Furthermore, according to the invention, the openings (8) for the insertion of the plants form two marginal and longitudinal lines. In this way, the roots of the adjacent plants can be completely isolated during the first growth phase thereof, preventing interference therebetween and allowing plants with different growth rates and even different types of plants to be arranged on the facility, generating, in turn, continuous production and an improved yield from the facility.Del tipo de las que cuentan con una pareja de varillas laterales (1, 1´) en funciones de soporte con pendiente para una lámina superior (2) con orificios (8) para implantación de las plantas, una lámina inferior (4) cerrada en funciones de colector, y una o más láminas intermedias (3), con orificios que determinan una trayectoria en cascada para el agua con los nutrientes, la invención consiste en disponer una lámina superior (2) multicapa en la que participan preferentemente cuatro capas (2a, 2b, 2c y 2d), que definen entre ellas estrechas canalizaciones (7) de uso selectivo, de manera que en el momento de la implantación la raíz de cada planta queda situada en una canalización (7) distinta de la utilizada por las plantas adyacentes. Además se ha previsto que los orificios (8) para implantación de las plantas, formen dos alineaciones marginales y longitudinales. D
