摘要
在实验室可控条件下,以碳氮比28.7∶1的农业有机废弃物(牛粪和稻秆)为赤子爱胜蚓(Eisenia foetida)的培养基质,研究蚯蚓的堆制作用对有机物料的化学及生物学特性的影响.结果表明:蚯蚓堆制处理30 d后,基质pH值、碳氮比显著降低,全磷显著升高,而全氮、碱解氮、可溶性碳、速效磷、微生物生物量碳、呼吸速率和微生物熵分别提高8.5%、2.6%、1.8%、6.3%、21.2%、4.4%和30.0%,有机质、呼吸熵分别降低5.0%和21.9%.蚯蚓堆制处理后物料具有较高的转化酶、酸性和碱性磷酸酶活性,较低的过氧化氢酶和脲酶活性.多元数据分析结果显示,自然堆制和蚯蚓堆制处理物料的化学和生物学特性均呈现显著的差异性.蚯蚓堆制处理优于自然堆制处理,可以明显改善有机物料的化学、生物学性质,是一种高效率处理农业有机废弃物的技术.
Taking mixed agricultural organic wastes cattle manure and rice straw（C：N=28.7：1） as the substrate of earthworm Eisenia foetida,an experiment was conducted to study the effects of earthworm on the changes of the chemical and biological properties of wastes during vermi-composting.After 30 days of vermi-composting,the substrate＇s pH and C/N decreased while the total P content increased significantly,and the total N,available N,dissolved organic carbon,available P content,microbial biomass-C,respiration rate,and microbial quotient increased by 8.5%,2.6%,1.8%,6.3%,21.2%,4.4%,and 30.0% whereas the organic matter content and metabolic quotient decreased by 5.0% and 21.9%,respectively,as compared with natural composting.Vermi-composting made the substrate have higher invertase,acid phosphatase,and alkaline phosphatase activities but lower catalase and urease activities.Principal component analysis and discriminant analysis confirmed the significant differences in the substrate＇s chemical and biological properties between vermi-composting and natural composting.This study indicated that vermi-composting was superior to natural composting,which could obviously improve the chemical and biological properties of composted organic materials,being a high efficient technology for the management of agricultural organic wastes.
出处
《应用生态学报》
CAS
CSCD
北大核心
2012年第3期779-784,共6页
Chinese Journal of Applied Ecology
基金
农业部生态农业重点开放实验室项目(2009K14)
广东省科技厅农业攻关项目(2007B080703011)
广东省科技计划项目(2008B080703010)资助
关键词
蚯蚓堆制
有机废弃物
化学性质
生物学性质
主成分分析
composting with earthworm
organic waste
chemical property
biological property
principal component analysis
