The substrate that is biologically enriched, its process of manufacture, and its applications to the regradation of pioneers.

摘要

This substrate is essentially composed of an organic material rich in colonies of Cyanophyceae in combination with colonies of bryophyte protonemata, which is incorporated into a non-erosive carrier composed of a clay material inoculated with biological components. It comprises furthermore materials which are rich in organic matter, calcareous additives, dry starch and water-retaining polymers. It is produced by forming the first stages of colonisation with Cyanophyceae and with bryophyte protonemata in a hygroclinic xerophilic location. On a clay bed, Cyanophyceae are cultivated in the form of a polyspecific combination together with combinations of bryophytes in the form of protonemata, these two combinations conforming to species which are present in the natural environment to be regraded, followed by drying and then by grinding of this culture, this is then spread on a fresh clay bed to increase the biomass to be produced and then, after drying and grinding the whole, materials rich in organic materials, in calcareous additives, in starch and in partly hydrated water-retaining polymers are incorporated therein. Application to the regradation of pioneer vegetations by including in the substrate a small quantity of seeds of higher plant species of the pre-sward or the sward, at the time when the substrate is spread.