摘要
采用室外人工翻堆好氧堆肥方法,进行了70d的鸡粪、鸡粪添加1%稻草和鸡粪添加3%稻草堆肥试验,采用平板记数法和最大可能记数法(MPN),研究了堆肥过程中氨化细菌、固氮菌、硝化菌和反硝化菌的数量变化规律。结果表明:氨化作用在堆肥初期显著,硝化作用、反硝化作用、硝化细菌和反硝化细菌数量随堆肥时间的推移有上升的趋势;堆肥中存在固氮菌,但数量变化不大。堆肥中氮转化微生物变化特征与堆肥中铵态氮、硝态氮变化规律相一致。
Outdoor medium-scale chicken manure with rice straw aeration composting experiments,lasted for 70 days, were carried out with artificial turning to study the numbers variation of ammonifier、nitrifier、denitrifier and nitrogen-fixing bacteria. The results showed that ammoniation was serious and ammonifier was obviously rose at the beginning of composting, Nitrification, denitrification, nitrifier and denitrifier were found that rose with the time prolonged. Nitrogen-fixing bacteria has not obviously changes with the composting process. The variations of microbial community have the same change tendency as that of NH_4^+-N、NO_3^--N during chicken manure composting.
出处
《土壤肥料》
CSCD
北大核心
2004年第4期40-43,共4页
Soils and Fertilizers
基金
江苏省科技厅基金项目(BS2000023)。
关键词
鸡粪
堆肥
氮素转化
微生物菌群
chicken manure
composting
nitrogen
microbial community
