Physical and Chemical Indexes of Composting Inoculated VT Microbes

Two composts were used in the experiment to study the effect of inoculating VT microbe on composting, one was produced by the chicken manure and the stalk spending 24 days, and the other was from the chicken manure and the saw spending 36 days. There were two kinds of disposal methods: with or without inoculation of VT microbes. The physical and chemical indexes of composts inoculated 2‰ VT microbes, such as temperature, C/N ratio, pH values, NH-N, NO-N during composting process were determined in the compost, the mechanisms of VT microbes in the compost accelerating composting process were analyzed. The results showed that inoculating VT microbes led to higher composting temperature, slower temperature decline in late mature period, lower pH values and C/N ratios, higher NO-N content and less NH-N loss compared with the treatment without inoculating VT, suggesting that inoculating VT microbes in the compost enhanced the activity of microbes and greatly decomposed and used organic matter that caused higher temperature and lower C/N ratios. In the treatment of VT microbes, the lower pH values could reduce NH-N loss, thus preserved nitrogen. So inoculating VT microbes in composting process was effective to decompose organic matter, raise temperature, shorten composting time, speed composting and increase composting quality.