| 摘要 |
An organic-mineral fertilizer, the fertilizing activity of which is maintained for a longer period of time. The fertilizer can be used to prepare the soils of plantations. The mineral and organic components of the fertilizer are put in a composition, whereas said organic components contain oil shale and/or substances processed from oil shale or oil shale semi-coke. Said organic components consist mainly of shale oil and ground oil shale, processed in acid, and/or a compost of ground semi-coke and organic waste. The mineral core is covered with with a thick layer of heavy shale oil or with its mixture with acetone, which is covered with ground oil shale powder, processed beforehand with acid, and semi-coke compost. Mineral components become available for plants roots secretions and microorganisms decompose small openings to the protecting thick layer of heavy shale oil. Mineral or other fertilizing components are not drained out by precipitation. The outer surface of fertilizer pellets promotes the metabolism of microorganisms and acts as a growth stimulator due to the ground oil shale, processed with acid, and due to the ground semi-coke compost. |
