利用电化学交流阻抗测试技术对新疆荒漠碱土壤液中铁微盘电极的阳极行为进行了研究，给出了相应的等效电路，对微电极在腐蚀电化学中的应用进行了分析 The electrochemical behavior of iron micro-disk electrode in desert alkali soil was studied by using electrochemical impedance spectroscopy. The corresponding equivalent circuit was given and the application of microelectrode in corrosion electrochemistry was analyzed.