生产上龙眼角颊木虱对龙眼秋梢造成严重危害。研究结果表明 ,龙眼叶片遭受角颊木虱严重为害后 ,体内清除活性氧的酶促系统活性下降幅度大于非酶促系统 ,酶促系统 SOD、POD、CAT活性分别降低 2 6.33%、2 8.58%和 2 7.86% ,达到极显著或显著差异 ;非酶促系统 GSH、As A含量下降 11.64%和 8.4 3%。表明体内清除活性氧的能力减弱 ,导致 H2 O2 等活性氧的积累 ,促进膜脂过氧化 ,造成膜的损伤 ,加速了叶片的衰老。表现为 MDA含量的提高和细胞膜透性的加大 The production of dorsal psyllids on the longan autumn tip cause serious damage. The results showed that the activities of SOD, POD and CAT in the enzymatic system were decreased by 2 6.33% and 2 8.58%, respectively, compared with the non-enzymatic system. However, And 2 7.86%, respectively. The contents of GSH and As A in non-enzymatic system decreased by 11.64% and 8.43%, respectively. Indicating that the body’s ability to scavenge reactive oxygen species weakened, resulting in the accumulation of reactive oxygen species such as H2O2, promoting membrane lipid peroxidation, resulting in membrane damage and accelerated leaf senescence. The performance of MDA content increased and cell membrane permeability increased