Zhang W L,Tian Z X,Zhang N et al.The survey of groundwater nitrate pollution by reason of superfluous nitrogen fertilization in North China[J].Plant Nutr.Fert.Sci.,1995,1(2):80-87.

• [9]张维理；田哲旭；张宁；等.；我国北方农用氮肥造成地下水硝酸盐污染的调查[J]