Attention has been paid to the phenomenon that bisulfite at low concentrations could increase photosynthetic rate and the mechanisms involved. After collecting and analyzing the relevant literature, it is proposed that the enhancement of photosynthesis by bisulfite at low concentrations could be probably attributed to the enhancement of cyclic photophosphorylation and thereby the supply of more ATP, the amount of which often limits the operation of the photosynthetic apparatus,but could not be due to the inhibition of photorespiration, the stimulation of stomatal opening, or supplementing sulphur as a nutrient necessary for the development or functioning of the photosynthetic apparatus.%低浓度亚硫酸氢盐可以促进光合作用的现象和有关的机理早已引起人们的关注. 通过归纳和分析相关文献, 认为低浓度亚硫酸氢盐对光合作用的促进效应可能是由于它通过促进围绕PSⅠ的循环电子传递及其耦联的光合磷酸化, 增加 ATP 的供应(因为 ATP 的供应常常是光合机构运转的限制因素); 而不是由于它抑制了光呼吸,或促进气孔开度,或作为光合器官的生长发育以及运转所必需的硫肥而起作用的.
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