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Message definition (Fertilizer ) ====Nitrate pollution==== Only a fraction of the nitrogen-based fertilizers is converted to plant matter. The remainder accumulates in the soil or is lost as run-off. High application rates of nitrogen-containing fertilizers combined with the high [[water solubility]] of nitrate leads to increased [[Surface runoff#Agricultural issues|runoff]] into [[surface water]] as well as [[Leaching (agriculture)|leaching]] into groundwater, thereby causing [[groundwater pollution]]. The excessive use of nitrogen-containing fertilizers (be they synthetic or natural) is particularly damaging, as much of the nitrogen that is not taken up by plants is transformed into nitrate which is easily leached.
硝酸塩汚染
窒素系肥料のごく一部しか植物物質に変換されない。残りは土壌に蓄積されるか、流出として失われる。硝酸塩の高い水溶性 と組み合わせた窒素含有肥料の高施用率は、地表水 への流出 と地下水への浸出 を増加させ、それによって地下水汚染 を引き起こす。窒素含有肥料(合成または天然を問わず)の過剰な使用は特に有害であり、植物に吸収されない窒素の多くが容易に浸出する硝酸塩に変換されるためである。