A long-term
field experiment was used to evaluate the effects of different fertilizers (OIO, organic
inorganic compound fertilizer specially formulated for mulberry; N, N fertilizer only; NPK, N, P and K
fertilizer; NF, the control without fertilization) on microbial abundance, community structure and
microbial functional diversity. The OIO treatment exhibited the highest bacterial and actinomycete levels,
community diversity, Shannon indices and average well color development (AWCD). However, the N
treatment resulted in the highest fungi levels. Bacillus sp. were the dominant bacteria in the OIO
treatment.