摘要
研究了初始C/N(mC/mN)分别为 2 9和 16的 2种不同条件对猪粪堆肥化处理的物质变化和腐熟度的影响 ,结果表明 :水溶性有机C/N、固相C/N、水溶性有机碳及水溶性NH4+ -N浓度均随着堆肥化的进行而降低 .种子发芽指数的评价结果表明 :初始C/N为 2 9时 ,猪粪经过 4 9d的堆肥后达到成熟 ,而C/N为 16的处理则需要 6 3d以上才能达到腐熟要求 .过高的盐分含量是导致低C/N条件下堆肥产品植物毒性较高的原因之一 .考虑到堆肥腐熟度受多方面化学因素的影响 。
The physical-chemical changes and maturity evaluation during pig manure composting at initial C/N ratio of 29 and 16 respectively were studied in this research. The results showed that the content of soluble organic C/N ratio, solid C/N ratio, dissolved organic carbon (DOC), and soluble NH + 4-N decreased after composting, which reflected the maturation process during pig manure composting. The seed germination index (GI) showed that pig manure compost at initial C/N ratio of 29 reached mature after composting for 49 days, while the compost at initial C/N ratio of 16 needed longer time than 63 days for further composting. In this study, the over-high content of salt in the compost at initial C/N ratio of 16 might contribute to the stronger phytotoxicity. Maturity of compost was influenced by lots of factors, so using a single chemical index for its evaluation was unilateral and unscientific. The seed germination index is the recommended index for maturity evaluation of solid organic waste compost.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2002年第3期1-4,共4页
Journal of South China Agricultural University
基金
美国Rockefeller基金资助项目
