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利用０５５－ＦＬ叶绿素荧光调制仪研究低温胁迫（５士２）ｏＣ对蔗叶光合作用的影响。结果表明，低温胁迫下蔗叶叶绿素ａ荧光诱导动力学曲线发生明显变化，Ｆ。／Ｆ。、Ｆ。／Ｆ．、ＤＣＰＩＰ光还原活性、量子产量（Ｙ）和Ｒｆｄ值降低，说明ＰＳＥ原初光能转换效率和潜在光
Effects of low temperature stress (5 ± 2) oC on photosynthesis of sugarcane leaves were studied by using 055-FL chlorophyll fluorescence modulator. The results showed that chlorophyll a fluorescence induced kinetic curve of sugarcane under low temperature stress changed obviously, / F. F / F. , The photoreduction activity of DCPIP, the decrease of quantum yield (Y) and the value of Rfd, indicating that the primary light energy conversion efficiency and potential light of PSE