| 摘要 |
<p>Natural fertiliser compsn. contains phosphoric acid, potash, lime, N, C, organic material and trace elements all of which have been obtd. by natural means. The compsn. is prepd. by mixing and milling the different prods., partic. organic sludge from water treatment stations, organic waste, cow dung, peat, residues from mushroom growing and poultry dung; a layer of the ground material is fermented several months, turned over and opt. re-ground for a second fermentation, then screened before use. Fertiliser is pref. used agriculturally and provides the vital elements for regenerating humic material in the soil and other essentials for bacteria life. The fertiliser also provides a use for biological sludge from water treatment stations.</p> |
