中文摘要：

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，而循环有机肥施人呵缓解收支失衡。

英文摘要：

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.