Soil phosphorus as agricultural non-point source pollution is one of the main factors which lead to water pollution.

土壤磷素的农业非点源污染是导致水体污染的最主要的原因之一。

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Following with the exhaust test, the content of soil phosphorus storage of each treatment showed a declining tendency.

随着耗竭试验的继续，各处理土壤磷库含量都呈下降趋势。

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Soil samples from these pens or corrals show ten times the concentration of phosphorus.

来自这些围栏或畜栏的土壤样本显示，磷的浓度是其10倍。

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The only way to increase yield was to find a way of supplying extra nitrogen, phosphorus and potassium to the soil.

ECONOMIST: The story of man's staple food