Abstract: Using distilled water without plasma treatment as the control（CK），atmospheric pressure argon cold plasma at 2 and 3 kV was used to activate distilled water for 5，10，and 15 min，resulting in six types of plasma‑activated water（PAW）. These types of PAW were then used to irrigate oat seeds to investigate the effects of PAW on oat seed germination and seedling growth. A comprehensive evaluation of different PAW treatments was conducted using the membership function method and principal component analysis，so as to provide a theoretical basis for the application of PAW in enhancing the growth potential of oat seeds. The results showed that the NO₂⁻ content of F（PAW produced by 3 kV atmospheric pressure argon cold plasma treatment for 15 min） treatment was the highest. Compared with CK，all PAW treatments generally improved the germination vigor，germination rate，germination index，and vigor index of oat seeds，with E（PAW produced by 3 kV atmospheric pressure argon cold plasma treatment for 10 min）showing the greatest increase. E and F treatments also improved seedling plant height，root length，number of rootlets，fresh weight，dry weight，and contents of chlorophyll，carotenoid，and soluble protein，with E treatment being more effective. Comprehensive evaluation indicated that E treatment had the best promoting effect on oat seed germination and seedling growth，followed by F treatment.In conclusion，PAW produced by 3 kV atmospheric pressure argon cold plasma treatment for 10 min has the best promoting effect on oat seed germination and seedling growth.

Key words: Oat, Plasma activated water, Seed germination, Seedling growth, Principal component analysis

摘要： 以未经过等离子体处理的蒸馏水为对照（CK），分别采用2 kV和3 kV的大气压氩气冷等离子体对蒸馏水进行5、10、15 min的活化处理，制备得到6种等离子体活化水（PAW），并用于培养燕麦种子，探究PAW对燕麦种子萌发及幼苗生长的影响，并采用隶属函数法及主成分分析法对不同PAW处理进行综合评价，以期为PAW在燕麦种子生长潜力提升方面的应用提供理论依据。结果表明，PAW中NO₂^-含量以F（3 kV大气压氩气冷等离子体处理15 min制备的PAW）处理最高。与CK相比，所有PAW处理燕麦种子的发芽势、发芽率、发芽指数和活力指数总体上均提高，以E（3 kV的大气压氩气冷等离子体处理10 min制备的PAW）处理提高幅度最大；E和F处理幼苗的株高、根长、根须数、鲜质量、干质量及叶绿素、类胡萝卜素、可溶性蛋白含量均提高，以E处理效果更好。综合评价结果表明，E处理对燕麦种子萌发和幼苗生长的促进效果最好，其次是F处理。综上，3 kV的大气压氩气冷等离子体处理10 min制备的PAW对燕麦种子萌发和幼苗生长的促进效果最佳。

关键词: 燕麦, 等离子体活化水, 种子萌发, 幼苗生长, 主成分分析