Influence of different nutrient management practices on quality of ground drinking water of eastern semi-mountainou regions of Northeast China

In order to discuss effects of different nutrient managements on rural ground drinking water of eastern half mountainous region of northeast china, field experiment was carried out in 2009 and 2010 in Qingyuan city, Liaoning province. The results indicated that, the nitrogen fertilizer amount of conventional nutrient management(CNM), farmland nutrient management(FNM) were 240, 192 kg/hm2 respectively. Comparing with CNM, FNM was decreased by 20% of nitrogen fertilizer amount. Nitrogen agronomy productivity in FNM was significantly improved 22.47%. Groundwater nitrate nitrogen concentration of shallow groundwater area was 1.6 times than that of deep groundwater area. Applied FNM to the demonstration area, groundwater nitrate nitrogen concentration in FNM of the demonstration area with CNM was greatly decreased by 51.19%. Consequently, it was very important to protect rural groundwater source area that FNM reduced the risk of farmland fertilization polluting groundwater.