基于化肥污染的黑龙江垦区粮食生产灰水足迹研究

化肥在促进粮食增产的同时,也是造成农业面源污染的主要来源。文中以东北地区重要的商品粮基地-黑龙江垦区为例,应用灰水足迹方法,对基于化肥污染造成的粮食生产灰水足迹进行研究。结果表明:粮食产量与灰水足迹、化肥施用量与灰水足迹均高度相关,相关系数分别为0.987、0.975;水稻生产对灰水足迹的贡献率为56%,所占比重最大,水稻高产地区同时也是高污染地区,并通过国际、国内比较,指出黑龙江垦区降低灰水足迹的空间,为"绿色垦区"建设提供科学决策的参考。

Research on grey water footprint based on chemical fertilizer use in the grain production in Heilongjiang reclamation area

For promoting grain production,chemical fertilizer use caused the agricultural non-point source pollution.In this research we took Heilongjiang commodity grain base as an example,applied the method of grey water footprint to study the grey water footprint of the grain production resulted from chemical fertilizer.The results showed that both of the corelation coefficients between the grain production yield and chemical fertilizer use chemical fertilizer use and grey water footprint were high,they are respectively 0.987 and 0.975;the grey water footprint of rice occupied the greatest contribution rate(56%)among the grey water footprint in the reclamation area,and through the domestic and international comparison,we pointed out the measurements to lower grey water footprint of the grain production and to improve "green land reclamation area" construction so as to provide the basis data for the scientific decision on "two type" agriculture development.