| 硅对干旱胁迫下草地早熟禾形态及生理特性的影响 |
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| 引用本文： | 郑明珠,刘金荣,秦伟志,杨有俊.硅对干旱胁迫下草地早熟禾形态及生理特性的影响[J].草业科学,2011,28(6):1009-1013. |
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| 作者姓名： | 郑明珠 刘金荣 秦伟志 杨有俊 |
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| 作者单位： | 兰州大学草地农业科技学院农业部草地农业生态系统学重点开放实验室,甘肃兰州,730020;甘肃源岗农林开发有限公司,甘肃兰州,730020 |
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| 基金项目： | 兰州市科技计划项目(2010-1-24); 甘肃省科技计划项目(1011FKCA137) |
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| 摘 要： | 摘要：通过测定人工模拟干旱缺水条件下，不同浓度硅处理后草地早熟禾(Poa pratensis)品种蓝宝石(Sapphire)总蒸散量、叶片相对含水量、叶片相对电导率、草坪质量、根干质量、根活性指标变化，研究了硅对干旱胁迫条件下草地早熟禾形态及生理特性的影响。结果表明，干旱胁迫下草地早熟禾的总蒸散量、叶片相对含水量、草坪质量、根干质量、根活性较对照（充分灌水）明显下降，而叶片相对电导率明显上升。在对照处理下，各浓度硅对总蒸散量、叶片相对含水量、草坪质量、根干质量、根活性、叶片相对电导率均没有显著影响；而在干旱胁迫下，硅能明显促进草地早熟禾总蒸散量、叶片相对含水量、草坪质量、根干质量、根活性升高，促进叶片相对电导率明显下降，且以浓度为2.14 mmol/L时效果最佳。
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| 关 键 词： | 干旱胁迫 硅 灌水量 蒸散量 |
Effects of silicon on Kentucky bluegrass under drought stress |
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| ZHENG Ming-zhu,LIU Jin-rong,QIN Wei-zhi,YANG You-jun.Effects of silicon on Kentucky bluegrass under drought stress[J].Pratacultural Science,2011,28(6):1009-1013. |
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| Authors: | ZHENG Ming-zhu LIU Jin-rong QIN Wei-zhi YANG You-jun |
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| Institution: | ZHENG Ming-zhu1,LIU Jin-rong1,QIN Wei-zhi2,YANG You-jun1 (1.College of Pastoral Agriculture Science and Technology,Lanzhou University,Key Laboratory of Grassland and Agro-Ecosystems,Ministry of Agriculture,Gansu Lanzhou 730020,China,2.Yuangang Agroforestry Development Co.Ltd.of Gansu,China) |
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| Abstract: | A simulated drought resistant experiment was conducted to understand the effect of different silicon supplies on morphology and physiology of Kentucky bluegrass Sapphire(Poa pratensis) by measuring the total evapotranspiration(ET),leaf relative water content(RWC),leaf electrolyte leakage(EL),turf quality(TQ),root dry weight(RDW) and root activity(RACT).This study indicated that ET,RWC,TQ,RDW,RACT of Kentucky bluegrass markedly decreased and EL markedly increased under the drought stress.The silicon supplies... |
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| Keywords: | drought stress silicon irrigation content evapotranspiration |
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