为了探究冷等离子体处理对玉米幼苗抗旱性的影响，以“郑单958”玉米种子为试验材料，选用不同浓度（20%、30%）的PEG-6000溶液模拟干旱胁迫，不同电压（5、7 kV）、不同处理时间（30、60 s）的大气压氩气介质阻挡放电（dielectric barrier discharge, DBD）放电冷等离子体处理玉米种子，测定其在干旱胁迫下幼苗的生理生化指标，并对试验结果进行机理分析。结果表明：在干旱胁迫下，适宜强度的冷等离子体处理有助于促进玉米幼苗的生长，提高叶绿素和渗透调节物质的含量，降低了膜脂过氧化程度，从而提高抗旱性。基于隶属函数对玉米抗旱能力进行综合评价分析，发现冷等离子体处理电压7 kV、处理时间60 s对提高玉米种子抗旱性效果最好。研究结果可为冷等离子体处理玉米种子的深入研究以及干旱半干旱地区的玉米种植提供一定的理论参考和技术指导。

In order to explore the effect of cold plasma treatment on the drought resistance of maize seedlings, "Zheng dan 958" maize seeds were used as the experimental material, PEG-6000 solution with different concentrations (20% and 30%) was used to simulate drought stress. The maize seeds were treated with argon DBD(dielectric barrier discharge) discharge cold plasma at different voltages (5, 7 kV) and treatment times (30, 60 s), the physiological and biochemical indexes of the seedlings under drought stress were determined, and the mechanism of the experimental results was analyzed. The results show that under drought stress, cold plasma treatment with appropriate intensity can improve the growth characteristics, chlorophyll content and osmotic regulation product content of maize seedlings, reduce the degree of membrane lipid peroxidation, and improve drought resistance. Based on the membership function, the drought resistance of maize was comprehensively evaluated and analyzed, and it was found that the cold plasma treatment voltage of 7 kV and the treatment time of 60 s had the best effect on improving the drought resistance of maize seeds. Results provide some theoretical reference and technical guidance for the in-depth study of cold plasma treatment of maize seeds and maize planting in arid and semi-arid areas.