| 陈新红,王志琴,杨建昌.不同氮素水平与水分胁迫对水稻秧苗素质的影响[J].干旱地区农业研究,2007,(1):78~81 |
| 不同氮素水平与水分胁迫对水稻秧苗素质的影响 |
| Effect of different nitrogen levels and water stress on qualities of rice seedling |
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| DOI：10.7606/j.issn.1000-7601.2007.01.16 |
| 中文关键词: 水稻 秧苗素质 氮素 水分胁迫 |
| 英文关键词:rice qualities of seedling nitrogen water stress |
| 基金项目:国家自然科学基金(30270778,30370828)； 江苏省自然科学基金(BK2003041) |
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| 摘要点击次数: 269 |
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| 中文摘要: |
| 通过温室水培试验,研究了秧苗期水分胁迫(PEG模拟)对水稻苗期生长生理特性的影响。结果表明:短期(5d)轻度水分胁迫,水稻秧苗的根冠比、叶片硝酸还原酶活性、根系活力和根系电导率提高;且根冠比随氮素水平的上升而降低,而叶片硝酸还原酶活性和根系活力则相反;随水分胁迫时期的延长,根冠比增加趋势减弱,硝酸还原酶活性和根系活力降低。轻度水分胁迫对叶片叶绿素、丙二醛、各器官可溶性糖和氮含量的影响不大。 |
| 英文摘要: |
| In order to study the effect of nitrogen and water stress on qualities of rice seedling the water planting and PEG imitated with water stress were carried out in greenhouse.The result showed: root/shoot,NR,root activity and root relative conductance were increased during short period and light water stress;with nitrogen enhancing,root/shoot was reduced.But NR and root activity were opposite; with extending of water stress,root/shoot trended to increase,NR and root activity were decreased.The effects of light water stress on content of chlorophyll,MDA of leaf,soluble sugar and N content of root,stem and leaf were not obvious. |
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