A substrate intended to act as a culture support comprising: a first part, making up the backbone of the substrate and representing more than 70% of the total volume of said substrate, composed of particles P>；100μm with a particle size greater than 100 μm, said particles as a whole consisting of hard particles PH>；100and/or of resilient particles PR>；I00, wherein said resilient particles make up a proportion by volume PV of between 0% and 100% by volume of this first part； a second part of corpuscular components P<；100 with a particle size of less than 100 μm, and making up from 0 to 450 g/l of said substrate； a third part, making up from 0 to 200 g/l of said substrate, composed of fine fibres that are between 3 mm and 100 mm in length and between 5 μm and 35 μm in diameter； a fourth part, making up from 0 to 200 g/l of said substrate, composed of other elongated and/or surface inclusions, at least one of the dimensions of each of these elongated or surface inclusions being much greater than the particle size of the particles of the first part, wherein the sum of the amounts of the third part and of the fourth part are greater than 3 g/l of said substrate. Use for preparing in particular turfed sport surfaces and building terraces.Se describe un substrato previsto para actuar como un soporte de cultivo, que comprende: una primera parte, que constituye la estructura del sustrato y que representa más del 70% del volumen total de dicho sustrato, compuesta por las partículas P>；100µm con un tamaño de partícula mayor que 100 pm, dichas partículas en conjunto consisten en las partículas duras PH>；100µm y/o en las partículas flexibles PR1>；100, donde dichas partículas flexibles constituyen una proporción en volumen de PV de entre 0% y 100% en volumen de esta primera parte； una segunda parte de componentes corpusculares P<；100µm con un tamaño de partícula menor que 100 µm, y que constituye de O a 450 gil de dicho sustrato； una tercera parte, que consti
