| 低氮胁迫下黄瓜根系相关指标的变化 |
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| 引用本文： | 徐静静,秦智伟,于明磊,武涛.低氮胁迫下黄瓜根系相关指标的变化[J].中国蔬菜,2011,1(14):47-51. |
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| 作者姓名： | 徐静静 秦智伟 于明磊 武涛 |
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| 作者单位： | 东北农业大学园艺学院，黑龙江哈尔滨 150030 |
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| 基金项目： | 国家农业科技成果转化资金项目(2010GB2B200131); 黑龙江省高校科技创新团队资金项目(2009td07) |
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| 摘 要： | 以耐低氮性强的黄瓜品种D0328和耐低氮性弱的黄瓜品种东农806为试材,进行两种水平的施氮处理,对植株发育过程中根系的各项指标进行对比分析.结果表明；低氮胁迫条件下,盛果期之前两个黄瓜品种根体积、根干质量和根系活力升高,盛果期之后降低；根系伤流量在结果初期之前上升,而后下降；冠根比在整个生育期中一直呈上升的趋势.两个黄...
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| 关 键 词： | 黄瓜 根系 低氮胁迫 筛选指标 |
Changes of Pertinent Indices in Cucumber Root System under Low-nitrogen Stress |
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| XU Jing-jing
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QIN Zhi-wei
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YU Ming-lei
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WU Tao.Changes of Pertinent Indices in Cucumber Root System under Low-nitrogen Stress[J].China Vegetables,2011,1(14):47-51. |
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| Authors: | XU Jing-jing QIN Zhi-wei YU Ming-lei WU Tao |
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| Institution: | College of Horticulture，Northeast Agricultural University，Harbin 150030，Heilongjiang，China |
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| Abstract: | Two cucumber cultivars'D0328'and'Dongnong 806'with widely different low-nitrogen tolerance indices were chosen as test materials,in order to find the changing mechanism through studying the changes in several indices of both cucumber roots during the whole period of duration.The result showed that in the case of low-nitrogen stress,the root volume,root dry weight and root vigor of both cultivars all increased before the full bearing stage and then decreased.However,the bleeding flow rate of both roots incre... |
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| Keywords: | Cucumber Root system Low-nitrogen stress Screening index |
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