添加微生物菌剂对油枯堆肥理化性状的影响

The Effects of Microbial Strains on the Physical and Chemical Properties of Canola Meal Compost

为了加快油枯堆肥化进程,以充分利用油枯资源,减少环境风险,本研究以油枯为基本原料,通过添加2种不同种类的微生物菌剂,采用强制通风的方法,研究了在油枯堆肥过程中,堆体的外观、pH、水溶性NO3--N、NH4+-N含量、C/N比的动态变化规律及菌剂对堆肥腐熟进程的影响。结果表明:添加微生物菌剂能加快物料水溶性NH4+-N和C/N比的降低速度,特别是添加榕风的处理在45～50天水溶性NH4+-N和C/N比已趋于稳定,不再下降,添加腐杆剂的处理略有下降,对照处理水溶性NH4+-N和C/N依然在下降。pH和水溶性NO3--N含量升高速度的顺序是榕风>腐杆剂>对照,加快了油枯堆肥腐熟化进程,有助于提高堆肥腐熟化程度。从堆肥理化性状综合分析,添加榕风菌剂的处理各指标均优于添加腐杆剂的处理,腐熟程度也比菌剂腐杆剂的效果好,说明添加榕风菌剂有利于加快油枯堆肥化进程,提高油枯堆肥质量。

In order to increase the speed of canola meal compost,canola meal were composted under aerobic condition by ventilated mandatorily.The effects of adding two types of microbial strain were evaluated.The physical properties,pH value,water soluble NO 3 --N and NH 4 ＋ -N contents C/N ratio and compost maturity were monitored throughout the composting process.The results indicated that the NH 4 ＋ -N content and C/N ratio of the treat with the microbial strain of Rongfeng addition began to get stabile in 45-50 days,and the ones of the treat with the microbial strain of Fuganji addition decreased slightly,and the ones of CK had been decreased still.The velocity of NO 3 --N content and pH value increases were also observed that Rofeng FuganjiCK.So the author concluded that adding microbial strain could speed up the composting process,and could accelerate the compost maturity.The microbial strain of Rongfeng was a better strain.