Abstract: To promote the improvement of saline⁃alkali land and enhance the utilization rate of saline⁃alkali land in southern Xinjiang and，the Artemisia argyi variety Wuye Dabaiai was taken as the research object and planted in mild saline⁃alkali land（pH value 9.23，salt content 0.128%） and moderate saline⁃alkali land（pH value 9.06，salt content 0. 338%） to explore the effects of different degrees of saline⁃alkali land in southern Xinjiang on the growth and quality of Artemisia argyi.The results showed that with the passage of planting time，the plant height，stem thickness and relative chlorophyll content in leaves of Artemisia argyi in mild and moderate saline⁃alkali land all showed an increasing trend.Compared with mild saline⁃alkali land，the net photosynthetic rate，stomatal conductance，intercellular CO₂ concentration and transpiration rate of Artemisia argyi leaves in moderate saline⁃alkali land decreased by 3.51%，16.18%，7.82% and 31.33% respectively，while the variable fluorescence/initial fluorescence and maximum photochemical efficiency increased extremely significantly.The activities of superoxide dismutase，peroxidase and catalase increased by 29.65%，66.97% and 1.65% respectively，the contents of soluble sugar and soluble protein increased by 17.46% and 10.02% respectively，and proline decreased by 17.55%.The down yield of leaves and the whole plant in moderately saline⁃alkali land decreased by 6.84% and 16.96% respectively，and the oil yield decreased by 9.75%. Among the secondary metabolites，the percentages of eucalyptol and borneol in the essential oil components significantly decreased，while the leaf flavonoid content increased by 17.95%.The stem flavonoids and total phenols significantly decreased.The pH values of mild saline⁃alkali land and moderate saline⁃alkali land decreased by 6.07% and 5.96% respectively compared to before planting.In conclusion，in a moderate saline⁃alkali land environment，Artemisia argyi can resist saline⁃alkali stress by significantly enhancing antioxidant activity and other means. The cultivation of Artemisia argyi can significantly lower the soil pH value and improve the salinization status.

Key words: Artemisia argyi, Saline?alkali land, Quality, Photosynthesis, Soil?improvement strategy

摘要： 为促进盐碱地改良，提高南疆地区盐碱地利用率，以五叶大白艾艾草品种为研究对象，将其种植在轻度盐碱地（pH值为9.23，含盐率为0.128%）和中度盐碱地（pH值为9.06，含盐率为0.338%），探究南疆地区不同程度盐碱地对艾草生长及品质的影响。结果表明，随着种植时间推移，轻度及中度盐碱地艾草株高、茎粗、叶片叶绿素相对含量均呈现升高的趋势。与轻度盐碱地相比，中度盐碱地艾草叶片的净光合速率、气孔导度、胞间CO₂浓度、蒸腾速率分别降低了3.51%、16.18%、7.82%、31.33%，可变荧光/初始荧光与最大光化学效率均极显著升高。超氧化物歧化酶、过氧化物酶、过氧化氢酶活性分别提升29.65%、66.97%、1.65%，可溶性糖与可溶性蛋白含量分别增加17.46%、10.02%，脯氨酸含量降低17.55%。中度盐碱地叶片出绒率、全株出绒率分别降低6.84%与16.96%，出油率下降9.75%。次生代谢产物中，桉油精与龙脑占精油总成分的含量百分比极显著降低，叶片黄酮含量提高17.95%，茎黄酮与总酚含量均极显著降低。轻度盐碱地和中度盐碱地pH值相比于种植前分别降低6.07%、5.96%。综上，中度盐碱地环境下的艾草主要通过显著增强抗氧化酶活性等途径抵御盐碱胁迫，艾草种植可显著降低土壤pH值，改善盐碱化状况。

关键词: 艾草, 盐碱地, 品质, 光合, 土壤改良策略