有机指数均高于底泥肥污染标准。
Organic index is higher than standard level of fertility of sediment.
对污泥堆肥和污泥肥料在农业生产上的应用提供了一定的理论依据。
The study supported some theoretical foundation for the application of sewage sludge composting and fertilizer in agricultural produce.
建堤坝来阻断河流，既阻挡了回流产卵的鱼，又阻碍了下游淤泥肥沃土壤。
Blocking a river with a dam blocks the movement both of fish upstream to spawn and of silt downstream to fertilise fields.
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