Nitrate content of leafed vegetable was prevalently high through investigated in several large vegetable bases, and over-level status was existent.

• 通过对淮北市近郊几个大的蔬菜生产基地叶菜类蔬菜中硝酸盐含量的分析,发现淮北市叶菜类蔬菜中硝酸盐含量普遍很高,且有超标状况存在。