| 摘要 |
The invention relates to a biological fertilizer used for improving and recovering degraded soil quality. According to the invention, the fertilizer consists, in mass percentage, of 1...90% mud resulted from urban water purifying plants, 1...90% manure, 1...90% marine vegetal and/or animal biomass, 1...50% vegetal wastes, up to 10% vegetal or animal coal, the product being solid, homogenous, coloured from grey to brown, with a pH ranging between 7.5 and 8.2. |
