[Characteristics of Microbial Nitrogen Degradation in Fluvo-aquic Soil of Hebei Plain].

Understanding the law of soil microbial degradation of nitrogen is of great practical significance for the remediation of soil nitrogen pollution. From fluvo-aquic soil of Hebei plain, 8 kinds of bacteria,including nitrification bacteria, ammonification bacteria, heterotrophic nitrification to aerobic denitrification bacteria were isolated and analyzed by 16S rDNA identification, and the most suitable strains were selected to prepare bacterial agents with optimized carrier materials. The effects of the screened strains of bacteria or antagonistic fungus to Chinese cabbage in the process of drip irrigation on nitrogen and PLFA (Phospholipid Fatty Acids) values in the soils were discussed.