中文摘要：

采用盆栽试验和模拟酸雨喷淋的试验方法,研究了重度酸雨（pH2.5）、中度酸雨（pH4.0）和对照（pH5.6）处理下,不同季节秃瓣杜英幼苗叶片的叶绿素荧光特性及其生长差异.结果表明：不同季节相同处理下,秃瓣杜英幼苗叶片的相对叶绿素含量（SPAD）、PSⅡ的最大光化学效率（Fv/Fm）、PSⅡ实际光化学量子产量（ΦPSⅡ）、株高和地径均为10月〉7月〉4月〉1月;同一季节不同处理中,SPAD、Fv/Fm、ΦPSⅡ、株高和地径为重度酸雨〉中度酸雨〉对照;不同pH酸雨梯度处理和季节的交互作用对秃瓣杜英的SPAD、Fv/Fm、株高和地径的影响显著,而对ΦPSⅡ、光化学淬灭系数和非光化学淬灭系数的影响不显著.

英文摘要：

A pot experiment was conducted to study the Eleocarpus glabripetalus seedlings leaf chlorophyll fluorescence characteristics and growth in different seasons under simulated acid rain stress （heavy,pH=2.5; moderate,pH=4.0; and control,pH=5.6）. In the same treatments,the leaf relative chlorophyll content （SPAD）,maximum PSⅡ photochemical efficiency （Fv/Fm）,actual PSⅡ photochemical quantum yield （ΦPSⅡ）,plant height,and stem diameter in different seasons were all in the order of OctoberJulyAprilJanuary. In the same seasons,all the parameters were in the order of heavy acid rainmoderate acid raincontrol. The interactions between different acid rain stress and seasons showed significant effects on the SPAD,Fv/Fm,plant height,and stem diameter,but lesser effects on ΦPSⅡ,qP and qN.