| 盐分处理对滨梅根际微域营养元素质量分数的影响 |
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| 引用本文： | 王利民,陈金林,陈菲然,梁珍海,薛丹,赵好.盐分处理对滨梅根际微域营养元素质量分数的影响[J].东北林业大学学报,2010,38(2). |
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| 作者姓名： | 王利民 陈金林 陈菲然 梁珍海 薛丹 赵好 |
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| 作者单位： | 南京林业大学,南京,210037;南京林业大学,南京,210037;南京林业大学,南京,210037;南京林业大学,南京,210037;南京林业大学,南京,210037;南京林业大学,南京,210037 |
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| 基金项目： | 国家“十一五”林业科技支撑计划专题(2006BAD09A0406) |
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| 摘 要： | 运用X-射线电子探针研究不同质量浓度的盐处理对滨梅(Prunus maritima)根际和根内营养元素相对质量分数及其分布的影响,揭示根-土界面微域养分的吸收、累积与亏缺状况,为植物耐盐机理和盐土改良利用提供依据。结果表明:在根际0~100μm范围内,9g/L处理的Na、Mg、Ca、Zn均呈明显亏缺状况,K、Cl亏缺不明显,而Fe则出现明显累积。随NaCl处理质量浓度的增加,Na、Mg吸收量增多,而Cl、Ca、Fe则呈先升后降趋势,表明一定质量浓度盐分下滨梅吸收Cl、Ca等元素较多,植物长势较好,但质量浓度过高则吸收Na、Mg较多,不仅影响细胞的扩张性能,而且造成生理缺水,引起植物伤害。因此,Na、Mg吸收累积可能是引起植物盐害的主要原因。
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| 关 键 词： | 盐胁迫 滨梅 根际 X-射线电子探针 大量元素 微量元素 |
Effect of Salt Treatments on Nutrient Elements in Rhizosphere Microzone of Prunus maritima |
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| Wang Limin,Chen Jinlin,Chen Feiran,Liang Zhenhai,Xue Dan,Zhao Hao.Effect of Salt Treatments on Nutrient Elements in Rhizosphere Microzone of Prunus maritima[J].Journal of Northeast Forestry University,2010,38(2). |
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| Authors: | Wang Limin Chen Jinlin Chen Feiran Liang Zhenhai Xue Dan Zhao Hao |
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| Institution: | College of Forest Resources and Environment;Nanjing Forestry University;Nanjing 210037;P.R.China |
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| Abstract: | X-ray electron probe was used to study the effect of treatments with different concentrations of NaCl on the distribution and relative content of nutrient elements in both rhizosphere and root tissue of Prunus maritima,aimed to study the absorption,accumulation and deficit of nutrients in the root-soil interface,and to provide a basis for the salt tolerance mechanism of plants and the improvement and utilization of solonchak.Results indicated that obvious deficit of Na,Mg,Ca,and Zn and not obvious deficit o... |
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| Keywords: | Salt stress Prunus maritima Rhizosphere X-ray electron probe Macroelements Microelements |
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