Objective] The aim was to study effects of seaweed anti-transpirants on photosynthetic traits, membrane lipid peroxidation of So-phora japonica.[ Method] The effects of different anti-transpirants on photosynthetic traits, membrane lipid peroxidation of Sophora japonica were studied.[Result] The results showed that, compared with the conventional anti-transpirants, 150 times liquid of seaweed anti-transpira-nts not only can effectively restrain water loss of Sophora japonica leaves under high temperature in summer, maintain a good leaf moisture sta-tus, reduce the damage of water stress, avoid the disorder of active oxygen scavenging system, but also can delay the leaf senescence, increase the transpiration efficiency, and have some effects on promoting photosynthesis.[ Conclusion] The results provide reference for application of new type seaweed anti-transpitants on drought resistance in garden trees.
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