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本文报道了在太湖地区稻麦轮作和不同氮肥施用水平条件下，田间原位测定和模型计算No淋溶污染和经济效益分析结果。土壤溶液中，No－N含量几乎均低于饮用水标准（No-N11．3mg／L），高于富营养化水质标准（全N1．5mg／L）。麦季当地氮肥施用量减少31．8％，未显著降低作物产量，作物未利用氮减少50％左右，且具有经济效益；水稻季节减少氮肥施用量40.1％．虽然显著减少氮素淋溶和作物未利用氮，但减产8.5％，经济上略有损失。
In this paper, the results of No-leaching pollution and economic benefit analysis in field measurements and model calculations under the conditions of rice-wheat rotation and different nitrogen fertilizer application rates in Taihu Lake region were reported. The content of No-N in soil solution was almost lower than that of drinking water (No-N11.3mg / L), which was higher than that of eutrophication water quality standard (full N1.5mg / L). The application of nitrogen fertilizer decreased by 31.8% in local wheat season, but did not reduce the crop yield significantly. The unutilized nitrogen in crop decreased about 50%, which was economically beneficial. In rice season, the amount of nitrogen fertilizer was reduced by 40.1%. Although nitrogen leaching was significantly reduced and nitrogen in crops was not utilized, the yield was reduced by 8.5% with a slight economic loss.