在现有施肥水平下，磷肥中放射性杂质不会导致土壤放射性污染。
Radioactive impurity in phosphate fertilizer can't cause pollution of soil.
河流的沉淀物中含有大量的放射性物质，这些放射性物质被暴风雨或洪水冲上河滩，使那里的土壤成为放射性污染源之一。
Its sediments remain highly contaminated and tainted floodplain soils that wash up during storms and floods have now become a source of radioactive materials.
再通过浓集系数公式的换算，可以同时反映海水、土壤两方面放射性的污染程度。
Radioactive pollution degrees of both the sea water and the soil can be deduced by means of conversion of the concentration factor's formula.
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