应用生态学报2017，Vol.28Issue(4)：1197-1203,7.DOI:10.13287/j.1001-9332.201704.003
保氮剂对水葫芦堆肥进程及氮素损失的影响
Effects of nitrogen preserving agent on composting process and nitrogen loss of Eichhornia crassipes
摘要
Abstract
To study the effects of nitrogen preserving agent (NPA) on composting process and nitrogen loss of Eichhornia crassipes,an aerobic composting was conducted for 35 days using four treatments.The NPA was prepared by mixing ferrous sulfate,humic acid sodium,and superphosphate (M:M:M =75:20:5).Four treatments were included with different mass ratios of NPA,ineluding 0％ (CK),1％ (PN1),2％ (PN2),and 3％ (PN3).The physical and chemical properties,N fraction concentrations,ammonia volatilization,and N loss rates were measured and explored during composting process.The results showed that the pile temperature of NPA treatments were higher than that of CK in thermophillic period,however their water contents were significantly (P＜0.05) lower than that in CK in cooling period.At the end of composting,the concentrations of total nitrogen and organic nitrogen increased significantly in NPA treatments (P＜0.05),and their highest concentrations in the PN3 treatment were 16.3％ and 13.2％ higher than those in CK,respectively.The ammonia volatilization losses of PN1,PN2 and PN3 treatments were 25.9％,31.5％ and 42.4％ lower than that of CK,respectively,however,their nitrogen fixation rates reached 31.3％,40.7％ and 72.2％ respectively.Therefore,adding NPA could accelerate start-up speed,shorten composting time,and also could effectively reduce ammonia volatilizations and nitrogen loss in the composting process of E.crassipes.Therefore,PN3 showed the best effects of nitrogen preserving.关键词
水葫芦/保氮剂/高温堆肥/氨挥发/氮素损失Key words
Eichhornia crassipes/nitrogen preserving agent/high temperature composting/ammonia volatilization/nitrogen loss引用本文复制引用
李森,罗雪梅,涂卫国,樊华,苟小林,杜玉龙,李玲,王琼瑶..保氮剂对水葫芦堆肥进程及氮素损失的影响[J].应用生态学报,2017,28(4):1197-1203,7.基金项目
本文由四川省科技支撑计划项目(2015SZ0205)和成都市科技惠民技术研发项目(2014-HM01-00171-SF)资助 This work was supported by the Sichuan Sci-Tech Support Project (2015SZ0205) and the Chengdu Sci-Tech Support Project (2014-HM01-00171-SF). （2015SZ0205）
