利用ICP-AES测定农田生态系统微量元素Mn和Cu的循环率与收支  

The Recycling Rate and Budget of Trace Element Mn and Cu in Agroecosystem Using ICP-AES

作　　者：周桦[1] 徐永刚[1] 姜春明[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》2011年第10期2848-2850,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(31070547;31000206);中国科学院创新项目(KZCX2-YW-407);国家科技支撑计划课题(2007BAD89B02)资助

摘　　要：将长期定位试验和ICP-AES测试相结合,研究了不同施肥制度下农田生态系统微量元素Mn和Cu的循环和收支状况。结果表明,Mn和Cu因属沉积型循环其循环率高于80%,且随投料量增加呈增加趋势。两种微量元素均入不敷出,收支差额呈现M<(或≤)NPK+M<CK<NPK,说明单施化肥可引起严重的收支赤字,而循环有机肥施入可缓解收支失衡。The recycling rate and budget of Mn and Cu under different fertilization regimes by using long-term field experiment and ICP-AES analysis were investigated in the present paper. The results showed that the recycling rates of Mn and Cu were greater than 80% because of sediment recycling type, and the values increased with the amount of feed stuffs increasing. Both the two elements under different fertilization regimes showed budget deficit, with the deficit order of M〈（or≤）NPK ,L M〈CK 〈NPK, showing that chemical fertilizer application might induce severe deficit, while application of recycling organic matter might minimize the unbalance.

关 键 词：MN CU 循环率 收支 

分 类 号：S181[农业科学—农业基础科学]