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以烟草废弃物为基本原料进行堆肥试验,研究了不同比例猪粪与烟草废弃物混合堆肥体系中温度、pH、全氮、C/N比、水溶性NH4+-N和种子发芽指数(GI,germination index)的动态变化规律,探讨了不同猪粪比例对烟草废弃物高温堆肥腐熟进程的影响。结果表明,在烟草废弃物中加入猪粪能缩短进入高温分解阶段的时间,增加高温分解持续时间,增加全氮含量,加快物料NH4+-N和C/N比降低的速率,加快烟草废弃物堆肥腐熟化进程。添加一定比例猪粪的处理(烟草废弃物:猪粪=7:3、烟草废弃物:猪粪=8:2和烟草废弃物:猪粪=9:1),分别在堆肥第3、4、5d进入高温分解阶段(>50℃),高温持续时间分别为11、10、8d;而纯烟草废弃物处理,最高温度为43℃,未进入高温分解阶段;至堆肥26d,NH4+-N含量分别比纯烟草废弃物对照降低47.7%、61.9%和25.6%;GI分别达到81.4%、84.1%和83.7%。
The composting experiments were carried out with tobacco waste as the basic raw material. The effects of temperature, pH, total nitrogen, C / N ratio, water-soluble NH4 + -N and germination index (GI) on the composting system of pig manure and tobacco waste were studied. index), the effects of different ratios of pig manure on maturity of high-temperature composting of tobacco was discussed. The results showed that adding pig manure to tobacco wastes can shorten the time of entering the pyrolysis stage, increase the duration of pyrolysis, increase the content of total nitrogen, speed up the decrease of NH4 + -N and C / N ratio, accelerate the compost of tobacco waste Decomposition process. Add a certain proportion of pig manure (tobacco waste: pig manure = 7: 3, tobacco waste: pig manure = 8: 2 and tobacco waste: pig manure = 9: 1) 5d into the pyrolysis stage (> 50 ℃), the duration of high temperature were 11,10,8 d, respectively; while the treatment of pure tobacco waste, the highest temperature was 43 ℃, did not enter pyrolysis stage; to composting 26d, NH4 + -N content respectively Which was 47.7%, 61.9% and 25.6% lower than that of pure tobacco waste, respectively; GI reached 81.4%, 84.1% and 83.7% respectively.