【摘要】 为缓解高浓度氯化钾对苹果叶片的伤害，以‘红富士’苹果幼树为试材，叶面喷施分别添加了扑米酮、阿维菌素、乙虫腈和苯甲酸苯酯氯离子通道抑制剂的KCl溶液，分析叶片光合性能、抗氧化能力及氯离子含量。结果显示，单独喷施75 mmol·L^-1 KCl导致叶片失绿焦枯，显著降低叶片净光合速率和水分利用效率，提高活性氧水平和丙二醛含量；在KCl溶液中分别加入四种氯离子通道抑制剂后，叶片焦枯、光合速率和水分利用效率的下降及过氧化伤害等现象均有不同程度的减轻，其中，扑米酮使高浓度KCl处理下的叶片氯离子含量显著下降，表明扑米酮能够通过降低氯离子积累而减轻高浓度KCl对叶片的伤害。更多还原

【Abstract】 To alleviate the damage of high concentration KCl to apple leaves, this study uses young ‘Red Fuji’ apple trees as materials, and sprays KCl solutions（added the ion channel inhibitors of primidone, abamectin, ethiprole and phenyl benzoate chlorine, respectively.） on the leaves. Then it analyzes the photosynthetic performance, antioxidant capacity and chlorine ion content of the leaves. The results show that spraying 75 mmol·L^-1 KCl alone causes chlorosis and scorching of leaf, significantly reduces net photosynthetic rate and water use efficiency of leaves, and increases levels of reactive oxygen species（ROS） and malondialdehyde content. After adding the four types of chloride channel inhibitors to KCl solution, the phenomena of leaf chlorosis, the decrease of photosynthetic rate and water use efficiency, and peroxidation damage are all alleviated to varying degrees. Among them, the addition of primidone significantly reduces the chloride ion content of leaves under high concentration KCl treatment, indicating that primidone can alleviate the damage of high concentration KCl to leaves by reducing chloride ion accumulation.更多还原