通过调查研究,对上海市1986～1992年间肥源和主要作物农田养分投入与利用进行统计。结果表明,有机肥源增长很快,但施用量下降,并已成为农田的污染源。水稻、三麦、油莱等主要作物农田氮、磷养分盈余,钾素亏缺。针对上述情况,本文提出了肥料管理和建议。 Through the investigation and study, the nutrient input and utilization of fertilizers and main cropland in Shanghai from 1986 to 1992 were calculated. The results showed that the organic fertilizer source increased rapidly, but the application rate decreased, and it has become the source of farmland pollution. Rice, three wheat, oil Lai and other major cropland nitrogen and phosphorus nutrient surplus, potassium deficiency. In response to the above situation, this paper presents fertilizer management and recommendations.