A method for the construction and management of a hybrid turf sports field, the method comprising:
- a first step for constructing a structure (S) placed on a base (F), the said structure comprising N stacked porous layers (Ci), N≥1, a lower layer (CN) being erected first on the base (F) and each porous layer (Ci) being then placed on a layer (C1+1) up to a top layer (C1) which is comprised between a surface of zero depth (Y0=0) and the bottom of the layer (C1) at a depth Y1, all layers being comprised between the depth Yi−1 of the base of a next higher layer (Ci−1), if >1, or Y0, if i=1, and the depth Yi of the base of the layer (Ci);
- a second step of installing turf on the surface of the top layer (C1), said installation of said turf being carried out by sowing seeds, once said top layer (C1) has been placed in a definitive position during said first step, or can be carried out beforehand by pre-cultivating grass on a layer of substrate which is then cut into a partition of sub-elements each comprising a volume of substrate of the same thickness with the turf pre-cultivated on a surface of the substrate and the roots installed therein, these sub-elements being transported and then finally gathered and placed in order to finalize the construction of said structure (S);
- a step of providing at least one hybrid layer (H) among the N porous layers, consisting of either
- (i) a cultivation substrate (SUB sab) which comprises synthetic reinforcing elements or
- (ii) a cultivation substrate (SUB sab) which shares the space of the hybrid layer (H) with synthetic reinforcing elements;
- said at least one hybrid layer (H) comprising one of the following configurations:
- synthetic reinforcing elements (SYNT renf) which are elongated or which are surface reinforcing elements, and the cultivation substrate (SUB sab) and the synthetic reinforcing elements (SYNT renf) are premixed;
- synthetic reinforcing elements (SYNT renf) which are incorporated into the cultivation substrate (SUB sab), once the turf is placed, and
- synthetic reinforcing elements (SYNT renf) which are incorporated into the cultivation substrate (SUB sab), once the turf is installed,
- wherein the synthetic elements are a synthetic carpet with a substrate incorporated between the strands of the synthetic carpet, a seeding is then carried out to finally constitute a sown synthetic carpet in which a real natural turf grows;
- and
- a step to manage a depth (Ppiezo) of a piezometric level of a water table inside the structure (S), to allow for good hydration of the turf using capillary flow from said water table.