摘要
有机肥在35℃下,好气培养40周,其矿化氮(N_t)和碳素(C_t)累积总量和周矿化速率(N_t/Δt,C_t/Δt)均为鸡粪>猪粪>牛粪。鸡粪和猪粪氮素矿化以及牛粪碳素矿化的动力学过程,均可用四个模型定量描述;牛粪氮素矿化、鸡粪和猪粪的碳素矿化与三个模型吻合度高。氮、碳素矿化动力学参数表征出有机肥氮、碳素释放能力的明显差异。
Three organic manures were incubated under aerobic conditions at 35℃ for 40 weeks and the mineralization of nitrogen and carbon in them was examined.Their total mineralizable nitrogen(Nt.max)and carbon(Ct.max.)and mineralization rate(Nt/△t and Ct/△t)determined during incubation appeared in the sequence of chicken dung> pig manure>cattle dung.The kinetics of nitrogen mincralization in chicken dung and pig manure and of carbon mineralization in cattle dung could be described quantitatively by four mathematical models while nitrogen mineralization in cattle dung and carbon mineralization in chicken dung and pig manure fitted well with three models.The kincctics parameters of nitrogen and carbon mineralization can be uesed to express the variation in N-and C-supplying capacity in manures.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
1993年第3期9-13,共5页
Journal of Southwest University(Natural Science Edition)
关键词
有机肥料
氮
碳
矿化作用
动力学参数
Organic fertilizers
nitrogen
carbon
mineralization
dynamics parameters
