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研究了模拟酸雨对桃梨叶片和果实的影响．结果表明：①经ｐＨ３．５，２．５，２．０的酸雨处理后，叶片在短期内出现不同程度的可见性伤斑，叶绿素含量和净光合速率下降，细胞膜透性明显增大．相对电导率与模拟酸雨ｐＨ值的相关系数为－０．８４６６＊（桃）和－０．８５６０＊（梨）．②模拟酸雨处理后的果实大小和品质有下降趋势（但差异不显著）．而且果实的贮藏性明显下降．③桃和梨受酸雨危害的情形基本一致，但桃对酸雨的反应比梨敏感
The effects of simulated acid rain on peach leaf and fruit were studied. The results showed that: (1) After treated with acid rain at pH3.5, pH values of 2.5 and 2.0, the leaves showed different degrees of visible lesion in a short period of time, the content of chlorophyll and net photosynthetic rate decreased, and the permeability of cell membrane increased obviously. The correlation coefficient of relative conductivity to simulated acid rain pH was -0.8466 * (peach) and -0.8560 * (pear). ② After the simulated acid rain treatment, the fruit size and quality had a downward trend (but the difference was not significant). And the storage of fruits decreased obviously. ③ peach and pear by the acid rain the situation is basically the same, but peach acid rain response is more sensitive than pear