ZHANG Xiatong,LIU Genhong,YU Yanan,et al.Effects of Saline-alkaline Stress on Chromium Uptake and Enrichment in Lycium barbarum[J].Northern Horticulture,2026,(6):110-120.[doi:10.11937/bfyy.20252977]
盐碱胁迫对枸杞吸收与富集铬的影响
- Title:
- Effects of Saline-alkaline Stress on Chromium Uptake and Enrichment in Lycium barbarum
- 文章编号:
- 1001-0009(2026)06-0110-11
- Keywords:
- salt-alkali; Lycium barbarum L.; chromium (Cr); enrichment; transport
- 分类号:
- S567.19
- 文献标志码:
- A
- 摘要:
- 以宁夏枸杞品种“宁杞7号”为试材，采用盆栽试验，对铬污染土壤进行不同梯度的盐碱处理，通过测定土壤及植株生长期间各部位铬含量，研究了不同盐碱浓度对重金属铬在土壤-枸杞系统中富集迁移能力的影响机制，以期为盐碱地枸杞安全生产及重金属污染修复提供参考依据。结果表明：土壤中铬含量总体呈现先上升后下降的变化趋势，盐碱胁迫显著提高了土壤铬含量，且20~40 cm土层铬含量显著高于0~20 cm土层。不同盐碱处理下，枸杞各部位铬含量均小于土壤铬含量，各部位对铬富集规律表现为根系>叶片>果实，根系是枸杞富集铬的主要部位。重金属铬在枸杞根系到叶片的转运能力显著高于叶片到果实的转运能力，枸杞对20~40 cm土层铬的富集能力显著高于0~20 cm土层。枸杞各部位铬含量与土壤铬含量的相关性受盐浓度影响均不显著。综上，3.0‰盐浓度20%碱化度胁迫能显著促进枸杞对铬的吸收富集，盐碱浓度升高会降低铬从土壤向叶片和果实的转运能力。
- Abstract:
- Taking Lycium barbarum cv.‘Ningqi-7’ as the test material，a pot experiment was conducted with chromium-contaminated soil under gradient saline-alkali stress treatments.The study investigated the effects of saline-alkali stress on chromium migration and transformation in the soil-plant system，as well as its absorption and accumulation in various tissues of wolfberry，in order to provide reference for safe wolfberry cultivation and phytoremediation in saline-alkali areas contaminated with heavy metals.The results showed that the chromium content in soil generally presented a trend of first increasing and then decreasing.Saline-alkali stress significantly increased the chromium content in soil，and the chromium content in the 20-40 cm soil layer was significantly higher than that in the 0-20 cm soil layer.Under different saline-alkali treatments，the chromium content in various parts of Lycium barbarum L.was lower than that in soil，and the chromium enrichment pattern in different parts was as follows,root>leaf>fruit，with roots being the main part for chromium enrichment in Lycium barbarum L.The transport capacity of heavy metal chromium from the roots to the leaves of Lycium barbarum L.was significantly higher than that from the leaves to the fruits，and the enrichment capacity of Lycium barbarum L.for chromium in the 20-40 cm soil layer was significantly higher than that in the 0-20 cm soil layer.The correlation between chromium content in various parts of Lycium barbarum L.and that in soil was not significantly affected by salt concentration.In summary,the stress of 3.0‰ salt concentration and 20% alkalization degree could significantly promote the absorption and enrichment of chromium by Lycium barbarum L.，while the increase of saline-alkali concentration would reduce the transport capacity of chromium from soil to leaves and fruits.
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备注/Memo
第一作者简介：张夏桐（2000-），女，硕士研究生，研究方向为作物栽培与耕作学。E-mail：15769598926@163.com.责任作者：刘根红（1973-），男，博士，教授，现主要从事作物栽培与耕作学等研究工作。E-mail：liu_genhong@163.com.基金项目：国家自然科学基金资助项目（42267037）。收稿日期：2025-08-17