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Demmig B,Bjorkman.Comparison of the effect of excessive light on chlorophyll fluorescence (77K) and photon yield of O2 evolution in leaves of higher plants[J].Plunta,1987,171:171-184. 刘建祥杨肖娥等.;低钾胁迫对水稻叶片光合功能的影响及其基因型差异[J]