| 不同氮肥处理对小麦生育后期旗叶生理活性的影响 |
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| 引用本文： | 姜丽娜,王伟莉,等.不同氮肥处理对小麦生育后期旗叶生理活性的影响[J].沈阳农业大学学报,1999,30(6):609-612. |
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| 作者姓名： | 姜丽娜 王伟莉 |
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| 作者单位： | 河南师范大学生命科学院!河南郑州450000(姜丽娜，李春喜，代西梅，尚玉磊，洪志霞)，新乡市农业局!河南新乡453002(王伟莉) |
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| 基金项目： | 国家“九五”重中之重科技攻关项目!《小麦大面积高产综合配套技术研究开发与示范》（项目编号：95－001－02） |
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| 摘 要： | 对不同生育时期追施氮肥与超高产小麦生育后期旗叶生理活性的变化进行了研究。结果表明：在后期生长过程中，小麦旗叶超氧化物歧化酶（ＳＯＤ）活性、叶绿素含量总体呈现下降趋势，膜脂过氧化产物丙二醛（ＭＤＡ）含量、外渗电导率总体呈现上升趋势。中后期适量追肥可抑制叶绿素的降解，使植株体内保持高水平的保护酶活性，降低后期细胞膜脂过氧化水平，延长叶片的功能期。
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| 关 键 词： | 氮肥 生理活性 超氧化物歧化酶 叶绿素 丙二醛 电导率 小麦 |
Effect of Different Nitrogen Application on the Physiological Activity of Flag Leaf at the Later Stage of Wheat |
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| JIANG Li-na, LI Chun-xi, DAI Xi-mei,et al..Effect of Different Nitrogen Application on the Physiological Activity of Flag Leaf at the Later Stage of Wheat[J].Journal of Shenyang Agricultural University,1999,30(6):609-612. |
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| Authors: | JIANG Li-na LI Chun-xi DAI Xi-mei |
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| Institution: | JIANG Li-na, LI Chun-xi, DAI Xi-mei, et al. |
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| Abstract: | The relationship between nitrogen application at different stages and the physiological activity of flag leaf of super high yielding wheat at the later stage was studied. The results showed that the activity of superoxide dismatase (sod) and chlorophyll content in flag leaf decreased in later period, while the membrane lipid peroxidation MDA and relative conductivity declined to increase. Nitrogen application appropriately at connective stage could suppress chlorophyll's degrading, keep the activity of SOD at high level, and decrease membrane lipid peroxidation level, prolong the functional stage of the leaf. |
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| Keywords: | nitrogen physiological activity superoxide dismatase chlorophyll malondialdehyde relative conductivity wheat |
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