【摘要】 2003-2007年上海市郊区1210个种植业定点农户调查数据表明,沪郊农田化肥施用总量与单位面积施用量在2003-2005年呈明显下降态势,但2006-2007年出现了较大的反弹;化肥施用品种结构不断优化。分析了同期沪郊农作物播种面积和种植业结构调整的动态变化特征,阐明了农田化肥使用量年际间波动的主要原因和发展趋势,并提出化肥减量施用的相关建议与对策。更多还原

【Abstract】 A statistical analysis of 1 210 crop-producing farm households in Shanghai suburbs between 2003-2007 showed that both total amount and per unit area amount of chemical fertilizer applied to farmland in Shanghai suburbs obviously presented a descending trend between 2003-2005 but a quite rebound between 2006-2007,and the product mix of applied chemical fertilizer had been continuously improving.The characteristics of both planting areas of crops and their structural readjustment were also analyzed.The major reasons and developmental trend for the annual quantitative fluctuation of chemical fertilizer applied to farmland were expounded,and proposals of reducing chemical fertilizer application were put forward.更多还原