| 摘要 |
A plant growing soil power replenishing compsn. contains N- and/or P- and/or K-fertiliser. The compsn. comprises (all wt.%): 50-80 of such river-bed sediment that contains CO32>->ions corresponding to at least 20 wt.% CaCO3; and based on 100% solids; 20, pref. 1-4 wt.% organic matter, pref. humus; and pref. at least of 8 Ca, a max. of 1.5 Mg pref. 0.4-0.6 wt.%; additional microelement concn of 100 ppm minimum; 6-30 N-fertiliser pref. carbamide 6-30 P-fertiliser pref. mono-ammonium-phosphate 6-30 K-fertiliser pref. KNO3. |
