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洪婷, 张晓勉, 吴才华, 谢长明, 岳春雷, 李贺鹏, 王珺, 黄旭波, 李俊. Cd 污染土壤不同钝化处理对木麻黄幼苗生理响应研究[J]. 浙江林业科技, 2020, 40(5): 7-12. DOI: 10.3969/j.issn.1001-3776.2020.05.002
引用本文: 洪婷, 张晓勉, 吴才华, 谢长明, 岳春雷, 李贺鹏, 王珺, 黄旭波, 李俊. Cd 污染土壤不同钝化处理对木麻黄幼苗生理响应研究[J]. 浙江林业科技, 2020, 40(5): 7-12. DOI: 10.3969/j.issn.1001-3776.2020.05.002
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HONG Ting, ZHANG Xiao-mian, WU Cai-hua, XIE Chang-ming, YUE Chun-lei, LI He-peng, WANG Jun, HUANG Xu-bo, LI Jun. Physiological Response of Casuarina equisetifolia Seedlings to Cd Contaminated Soil after Passivating Treatment[J]. Journal of Zhejiang Forestry Science and Technology, 2020, 40(5): 7-12. DOI: 10.3969/j.issn.1001-3776.2020.05.002
Citation: HONG Ting, ZHANG Xiao-mian, WU Cai-hua, XIE Chang-ming, YUE Chun-lei, LI He-peng, WANG Jun, HUANG Xu-bo, LI Jun. Physiological Response of Casuarina equisetifolia Seedlings to Cd Contaminated Soil after Passivating Treatment[J]. Journal of Zhejiang Forestry Science and Technology, 2020, 40(5): 7-12. DOI: 10.3969/j.issn.1001-3776.2020.05.002
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Cd 污染土壤不同钝化处理对木麻黄幼苗生理响应研究

Physiological Response of Casuarina equisetifolia Seedlings to Cd Contaminated Soil after Passivating Treatment

    摘要
  • 摘要: 以木麻黄 Casuarina equisetifolia 1年生幼苗为实验对象，采用重金属 Cd污染土盆栽实验，研究添加秸秆生物炭、泥炭、凹凸棒土 3种钝化剂对木麻黄生长情况、膜质过氧化和渗透调节等的影响，分析木麻黄对 Cd胁迫的耐受机理。结果表明，在中度以上 Cd（2.52 mg·kg-1）胁迫条件下，木麻黄依靠可溶性蛋白质和可溶性糖等渗透调节物质对膜质过氧化进行修复，维持正常的生长状态， 5个月时的高生长效率、地径生长效率分别达到种植初始值的 2.5倍以上和 14倍以上，表现出对 Cd胁迫较强的适应能力；单独添加 5%的秸秆生物炭、泥炭和凹凸棒土 3种钝化剂可有效减轻 Cd胁迫危害，3种钝化剂处理木麻黄幼苗叶片中 MDA的含量分别为对照的 39.3%，84.1%和 94.3%；通过多重比较和聚类分析认为单独添加 5%的秸秆生物炭的综合钝化效果最好。木麻黄作为多功能树种，在土壤重金属污染修复方面具有较大应用潜力。

     

    Abstract: In June 2019, 1-year bare-root Casuarina equisetifolia container cutting seedlings were planted on pure Cd contaminated soil (CK), +5% of straw biochar, +5% of peat and +5% of attapulgite. 5 months after treatment, determinations were implemented on diameter and height growth, content of MDA, soluble sugar and soluble protein. The results showed that height and ground diameter growth reached more than 2.5 and 14 time of the initial value, showing strong adaptability to Cd stress. MDA content of seedlings on treated soil was 39.3%, 84.1% and 94.3% of that on the control. Multiple and cluster analysis demonstrated that adding 5% of straw biochar had the best passivation effect.

     

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