NaHCO3 + Na₂CO₃ 复合盐碱胁迫对CL26柳树幼苗生长及生理特性的影响

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中图分类号：S792.12 文献标识码：A doi：10.13601/j.issn.1005—5215.2025.06.012

Effects of NaHCO3+Na2 （20 CO3 Combined Saline-alkali Stress on Growth and Physiological Characteristics of CL26 Willow Seedlings

Xu Xianyu

（Shangzhi State-owned ForestFarm Administration Bureau of HeilongjiangProvince，Harbin15o6oo，China）

AbstractTo investigate the adaptability of willow clone CL26 to saline-alkali environments，its cuting seedlings were used as materials. Irigation treatments were conducted with a composite solution of NaHCO3+Na2CO3 （ata ratio of 9：1） at concentration gradients of O，50，100，150，200，and 250 mmol ⋅L-1 .Growth indicators such as total root number and total root length，as wellas physiological indicators including soluble sugar （SS），soluble protein （SP），malondialdehyde（MDA），and relative conductivity （RC）of the seedlings were determined.The response patterns were analyzed by using Excel and SPSS software.The results showed as follws：with the increase of saline-alkali concentration，the total root number and total root length first decreased and then increased;SS，SP，and MDA showed characteristicsof multiplefluctuations;whileRC showed first decreased，thenincreased，and thendecreased again.CL26wilow seedlings can adapt to saline-alkali environments by accumulating osmotic adjustment substances，repair mild stress damage，and thus exhibit strong saline-alkali resistance.

Key words CL26 willow; NaHCO3 十 Na2CO3 combined saline-alkali;physiological metabolism

在生态防护体系构建中，防护林起着举足轻重的作用，而适宜的树种选择是防护林建设成功的关键。（剩余6309字）