Effects of carbon-nitrogen ratio of materials and inoculation amount of microbial inoculants on the composting process of cucumber seedlings-chicken manure
In order to clarify the suitable carbon-nitrogen ratio and inoculation amount of microbial inoculants for cu-cumber seedlings and chicken manure composting,three carbon-nitrogen ratios(17.5,22.5 and 27.5)and three microbial inoculation amounts(0.1%,0.2% and 0.3%)were designed in this study.A total of nine treatments were used to deter-mine the effects of different treatments on temperature,degradation rate of organic matter,pH value,seed germination in-dex(GI),nutrient content and compost maturity during the aerobic composting of cucumber seedlings and chicken manure.The results showed that the pile temperature reached more than 50℃faster under high carbon-nitrogen ratio and high inoc-ulation amount of microbial inoculants,and the peak value of high temperature during composting was significantly higher than that of medium and low carbon-nitrogen ratio and medium and low inoculation amount of microbial inoc-ulants.Under high carbon-nitrogen ratio and high inocula-tion amount of microbial inoculants,the degradation rate of organic matter and the maturity of compost(T)were significantly improved.However,under the treatment of 0.3% micro-bial agent inoculation,the retention effect of available phosphorus and available potassium and the increase of final germi-nation index(GI)of composting were not as good as those of 0.2% and 0.1% inoculation.Based on the above analysis,the suitable carbon-nitrogen ratio was 27.5 and the inoculation amount of microbial agent was 0.1%-0.2%when cucumber seedlings and chicken manure were composted harmlessly.
万方数据
维普
