摘要
经过 6 3d堆肥化处理后 ,猪粪与木屑混合堆肥及猪粪、木屑与树叶混合堆肥的T N分别从开始的 1.5 7%和 1.78%增加到 2 .0 %和 2 .11% ;水溶性NO3 N/水溶性T N均从接近于 0的水平增加到 3%左右 ;水溶性有机N/水溶性T N分别增加到 70 %和 76 % ;水溶性NH4 N/水溶性T N则分别从开始的5 2 %和 6 1%下降至堆肥结束时的 30 %和 2 4 % .种子发芽系数的测定结果表明 ,加入树叶有利于猪粪的腐熟化 ,可使猪粪堆肥化处理所需的时间从 4 2d缩短至 35d .化学指标与种子发芽系数的相关分析结果表明 ,水溶性NH4 N/水溶性T N、水溶性NO3 N/水溶性T N和水溶性有机N/水溶性T N均与种子发芽系数呈显著相关 ,可作为堆肥的腐熟度评价指标 .
The contents of T N, the ratios of soluble NO 3 N/soluble T N and soluble organic N/soluble T N increased after co composting for 63 days of pig manure and sawdust with or without additional leaves, while the ratios of soluble NH 4 N/soluble T N decreased. In this study, addition of leaves was beneficial for maturation of pig manure composting, and it could shorten the composting time from 42d to 35d.The ratios of soluble NH 4 N/soluble T N,soluble NO 3 N/soluble T N and soluble organic N/soluble T N correlated with seed germination index (GI) significantly, and it could be used for maturity evaluation.
出处
《应用生态学报》
CAS
CSCD
2002年第11期1459-1462,共4页
Chinese Journal of Applied Ecology
基金
美国洛克菲勒基金资助项目 .
