| 2种土壤上羊草生长动态和主要矿物质含量的比较分析 |
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| 引用本文： | 黄立华,梁正伟.2种土壤上羊草生长动态和主要矿物质含量的比较分析[J].西北植物学报,2009,29(10). |
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| 作者姓名： | 黄立华 梁正伟 |
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| 作者单位： | 中国科学院,东北地理与农业生态研究所,吉林长春,130012;中国大安碱地生态试验站,吉林大安,131317 |
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| 基金项目： | 国家科技部973项目，国家科技支撑重大项目，中科院知识创新工程前沿领域项目，中国科学院西部行动计划项目 |
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| 摘 要： | 以4叶龄羊草实生苗为实验材料,将其移栽到不同pH的黑土和盐碱土上,观察土壤盐碱胁迫对移栽羊草幼苗生长动态和主要矿物质含量的影响.结果表明,在盐碱土上,羊草幼苗生长速率较在黑土上显著降低,分蘖能力显著下降,其株高、叶片数和分蘖数分别降至黑土上的93.1%、94.4%和78.1%;羊草在盐碱土上地上部和地下部干重分别是黑土上的91.8%和92.1%,但地下部根茎较为发达,其数量和长度分别比黑土上显著增加48.9%和22.5%;盐碱土上羊草植株钠离子含量显著高于黑土,全磷和钾离子含量显著低于黑土,全氮含量与黑土上没有显著差异.研究发现,羊草在盐碱土上具有发达的根茎且能维持较高含水量,从而表现出较强的耐盐碱能力.
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| 关 键 词： | 羊草 盐碱胁迫 生长动态 矿物质含量 |
Comparison and Analysis of Growth Dynamics and Mineral Content of Leymus chinensis in Two Different Soils |
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| HUANG Li-hua,LIANG Zheng-wei.Comparison and Analysis of Growth Dynamics and Mineral Content of Leymus chinensis in Two Different Soils[J].Acta Botanica Boreali-Occidentalia Sinica,2009,29(10). |
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| Authors: | HUANG Li-hua LIANG Zheng-wei |
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| Institution: | HUANG Li-hua1,2,LIANG Zheng-wei1,2(1 Northeast Institute of Geography , Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012,China,2 Da'an Sodic L, Experiment Station,Da'an,Jilin 131317,China) |
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| Abstract: | The effect of saline-alkaline stress on growth dynamics and main mineral contents of Leymus chinensis seedlings transplanted were investigated.The results showed that the seedling's growth rate was decreased significantly and tiller numbers were reduced significantly in saline alkaline soils than those in black soils,plant height and leaf number and tiller number of L.chinensis in saline alkaline soil were 93.1 percent,94.4 percent and 78.1 percent of those in black soil,respectively.Shoot dry weight and ro... |
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| Keywords: | Leymus chinensis saline-alkaline stress growth dynamics mineral content |
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