堆肥过程中低C/N对氮素变化影响的研究  

Influence of Low C/N on the Nitrogen Changing in the Composting

作　　者：李清伟[1] 吕炳南[1] 李慧莉[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院

出　　处：《农机化研究》2006年第12期176-177,共2页Journal of Agricultural Mechanization Research

摘　　要：以鸡粪、城市生活垃圾和秸秆为原料,在C/N比分别为15,20和25的情况下进行堆肥,并根据氮素的变化研究在低C/N情况下进行堆肥的可能性。在3个处理中,C/N均降低,C/N25降低明显;总氮浓度降低,C/N15在堆肥结束时总氮浓度最高;NH4+-N浓度在高温期最高,NO3--N在高温期后浓度开始增加;低C/N堆肥初始阶段,C/N越低,堆肥产品速效氮含量越高。Co-composting in low C/N of 15, 20 and 25 using poultry manure, municipal solid waste and corn straw as raw composting material were conducted to validate the possibility of composting in low C/N. Nitrogen transformation were determined at different composting stages. During the composting, the total nitrogen reduced gradually with the composting time. The lower the, C/N ratio, the higher total nitrogen concentration find in the final. The NH4^＋-N decreased during the high temperature period. The NO3^＋-N increased after high temperature period. The concentration of usable nitrogen was increased after composting. The lower C/N ratio, the higher usable ：nitrogen received.

关 键 词：环境工程学 堆肥 试验研究 鸡粪 C/N 

分 类 号：X71[环境科学与工程—环境工程] S141.4[农业科学—肥料学]