The community structure and diversity of nos Z-type denitrifying bacteria under various fertilization regimes including control without fertilizers(CK), conventional fertilization(CF)and cattle fertilizer irrigation treatments in three fertilizer levels(T4, T5, T11)in Xushui, Hebei Province were investigated by the combination of terminal restriction fragment length polymorphism(T-RFLP) analysis and gene sequencing. The results showed that no significantly difference was noted in nos Z-type denitrifying bac...