| Intensive livestock and poultry manure (ILPM) is one of the main sources of modern organic fertilizers in
China, however, it contains much more heavy metals and other pollutants. Long-term application of ILPM may influence the
structure and function of microbial community in cultivated soil. In order to understand the effects of long-term application of
ILPM on soil microbial community function, we conducted an experiment using the BIOLOG micro plate method. All the soil
samples were collected from two long-term experiment plots with ILPM or chemical fertilizer in Haian county of Jiangsu
province. Results showed that the average well color development (AWCD) in soil with application of ILPM was higher than
that of soil with chemical fertilizer in two kinds of plots. Compared with soil in application of chemical fertilizer treatment,
soil microbial community species richness and dominance in treatments with IPLM did not change significantly, but species
evenness significantly increased. The utilization ability of soil microbes on amine, carbohydrate and amino acid in treatments
with IPLM was higher than that in treatments with chemical fertilizer. Results of principal component analysis and
correspondence analysis also showed that the direction and ability of soil microbial community carbon resources utilization
were significantly different between treatments with ILPM and with chemical fertilizer. Our results indicated that application
of intensive livestock and poultry manure could change the functional diversity of soil microbial community. |
