选用抗旱型小麦品种陕合６号和水分敏感型小麦品种郑引１号的黄化幼苗为材料，研究了光处理对小麦幼叶脂氧合酶活性和膜脂过氧化作用的影响。结果表明：光处理后黄叶变绿，叶片中的ＬＯＸ活性降低，丙二醛含量和叶绿素含量增加，膜透性升高，ＩＵＦＡ升高。ＬＯＸ活性与光抑制过程的恢复，光保护过程及膜脂过氧化作用有关。光诱导产生的膜脂过氧化作用是一种“准膜脂过氧化作用”。 The effects of light treatment on the activities of lipoxygenase and the lipid peroxidation of young leaves of wheat were studied using yellowing seedlings of drought-resistant wheat variety Shan-he 6 and water-sensitive wheat variety Zheng-Yin 1. The results showed that after the light treatment, the yellow leaves turned green, the LOX activity in the leaves decreased, MDA content and chlorophyll content increased, membrane permeability increased and IUFA increased. LOX activity is related to the recovery of photoinhibition process, photoprotection process and membrane lipid peroxidation. Light-induced membrane lipid peroxidation is a “quasi-membrane lipid peroxidation.”