Use of a solid mineral composition for increasing the fertility of a crop soil or of a prairie soil

摘要

The invention relates to the use of a solid mineral composition comprising the following formula (I): - from 4.58% to 77.8% calcium carbonate–from 3.85% to 69.29% dolomite–from 5.7% to 12.4% rock salt–from 4.25% to 8.49% lignosulphate–from 0.37% to 2.44% potassium sulphate–from 0.01% to 0.07% magnesium oxide–from 0.009% to 0.066% elemental sulphur, the above percentages comprising the percentages by weight of each of the compounds, relative to the total weight of solids of said mineral composition, for increasing the fertility of a soil by causing an increase in at least one enzymatic activity contained in said soil, selected from (i) phosphatase, (ii) b-xylosidase, (iii)α-glucosidase and (iv) b-glucosidase.