5. The compound fertilizer improved the population of azotobacter and potassium bacteria, and the phosphate ammonium enhanced the population of phosphobacteria.
复合肥有利于提高固氮菌和钾细菌数量,磷酸铵促进了磷细菌数量的增长。
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6. The number of aerobic azotobacter decreased with the successive cropping years increasing but was higher than CK and as 311.21%, 120.77% and 46.07% times as CK respectively.
7. The number of aerobic azotobacter decreased with the successive cropping years increasing but was higher than CK and as 311.21%, 120.77% and 46.07% times as CK respectively.