利用ICP-AES测定农田生态系统微量元素Fe和Zn的循环率  

The Recycling Rate of Trace Element Fe and Zn in Agro-Ecosystem Using ICP-AES

作　　者：宇万太[1] 马强[1] 周桦[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,辽宁沈阳110016

出　　处：《光谱学与光谱分析》2010年第12期3410-3412,共3页Spectroscopy and Spectral Analysis

基　　金：中国科学院创新项目(KZCX2-YW-405;KZCX2-YW-407);国家科技支撑计划课题项目(2008BADA7B08;2007BAD89B02);污染环境的生态修复与资源化技术教育部重点实验室开放基金项目(ERCERR08014)资助

摘　　要：通过长期定位试验和室内ICP-AES分析测试,探讨了下辽河平原不同施肥制度下农田生态系统微量元素Fe和Zn的输入情况,明晰了有机肥是农田输入Fe和Zn的主要途径。阐述了在没有垫圈土的情况下,投料经喂饲-堆腐过程的残留率为21.8%,低于有机物料施入土壤1年后的残留率(30%)。Zn通过喂饲-堆腐过程的循环率为71.9%,而Fe的循环率则为81.0%。Input of trace elements Fe and Zn in the lower reach of Liaohe Plain under different fertilization systems was studied by long-term field experiment and ICP-AES analysis.The results showed that Fe and Zn were mainly from organic manure in agro-ecosystem.The residual rate of organic manure through a feeding-composting cycle in the absence of bedding materials was 21.84%,which was lower than that of organic matter fertilized to soil after one year.The recycling rate of Zn through a feeding-composting cycle was 71.9%,and the recycling rate of Fe was 81.0%.

关 键 词：长期定位实验 FE ZN 残留率 循环率 

分 类 号：S181[农业科学—农业基础科学]