采用土培的方法系统研究了铅胁迫下小麦幼苗叶片的抗氧化酶活性及傅里叶红外光谱的变化。结果表明,随着Pb~(2+)浓度的升高,抗氧化酶SOD、CAT活性出现先升高后降低的趋势,POD活性呈下降趋势。同时铅胁迫影响着小麦叶片的傅里叶红外光谱,高浓度的铅胁迫能使FTIR谱特征峰出现较明显的位移,代表着有机物质的转变。 The soil anti-oxidative enzyme activity and Fourier transform infrared spectroscopy (FTIR) of wheat seedling leaves were systematically studied by using soil culture method. The results showed that with the increase of Pb 2+ concentration, the activities of SOD and CAT increased firstly and then decreased, while the activities of POD decreased. At the same time, Pb stress affected the FT-IR spectra of wheat leaves. High concentrations of Pb stress caused a significant shift in the FTIR spectral peaks, which represented the transformation of organic matter.