Abstract:

In order to accelerate the process of the composting of canola meal, this paper studied the effect of microbial agent and different C/N on the dynamic changes of temperature, pH, NH4+-N and NO3--N concentrations and C/N ratio during the composting of canola meal. The results showed that adjusting original C/N ratio to 25, which was able to make the temperature rise and accelerate the translation from NH4+-N to NO3--N. At the same time, adding the microbial agent was capable of rising to the highest temperature (50-60℃), lasting about 10 days, causing organic matters decomposing rapidly, and the C/N changing obviously from original 25 to 13 in the end, advancing the composting time for 20 days. On suitable conditions, adding microbial agent of Rongfeng was beneficial to improve the composting processes and qualities, and microbial agent of Rongfeng benefit the composting of canola meal.