| 水分胁迫对夏玉米生理指标的影响 |
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| 引用本文： | 郑灵祥,王密侠,寇明蕾,赵春明,张廉祥. 水分胁迫对夏玉米生理指标的影响[J]. 中国农村水利水电, 2010, 0(4): 43-46 |
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| 作者姓名： | 郑灵祥 王密侠 寇明蕾 赵春明 张廉祥 |
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| 作者单位： | 1. 西北农林科技大学水利与建筑工程学院,陕西,杨凌,712100
2. 陕西省咸阳市渭城区水务局,咸阳,712000 |
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| 基金项目： | 国家高技术研究发展计划 |
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| 摘 要： | 研究了水分胁迫及胁迫后复水对夏玉米光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、叶绿素含量及产量的影响。结果表明:Pn、Tr、Gs等生理指标有着明显的日变化特征;不同水分处理峰值的大小受胁迫程度的影响;Gs、Tr、Pn的日变化呈单峰趋势,峰值出现在12∶00左右;胁迫后复水的玉米叶片机能恢复速度与胁迫程度有关,中度胁迫恢复速度最快,重度胁迫恢复速度最慢;苗期到抽雄期各种水分处理的叶绿素含量均呈上升趋势,且叶绿素的含量随着胁迫程度的增加而减小,灌浆期开始各种水分处理的叶绿素含量均缓慢下降,灌浆期处理3(T3)叶绿素相对含量比同期其他水分处理高;对夏玉米各阶段及整个生育期的日耗水量与叶面积的日增长量进行分析,得出了各阶段及整个生理期的日耗水量与叶面积日变化量的二次相关的方程。
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| 关 键 词： | 夏玉米 水分胁迫 生理指标 |
| 收稿时间： | 2009-11-17 |
| 修稿时间： | 2009-12-10 |
Effect of Water Stress on Physiological Indexes of the Summer Maize |
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| ZHENG Ling-xiang , WANG Mi-xia , KOU Ming-lei , ZHAO Chun-ming , ZHANG Lian-xiang. Effect of Water Stress on Physiological Indexes of the Summer Maize[J]. China Rural Water and Hydropower, 2010, 0(4): 43-46 |
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| Authors: | ZHENG Ling-xiang WANG Mi-xia KOU Ming-lei ZHAO Chun-ming ZHANG Lian-xiang |
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| Affiliation: | ZHENG Ling-xiang1,WANG Mi-xia1,KOU Ming-lei2,ZHAO Chun-ming1,ZHANG Lian-xiang1(1.College of Water Resources , Architectural Engineering,Northwest Agricultural , Forestry University,Yangling 712100,Shaanxi Province,China,2.Bureau of Water Resources,Weicheng District of Xianyang City,Yangling 712000,China) |
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| Abstract: | The effects of water stress and re-watering on plasma treatment,transpiration rate,stomatal conductance and output of summer maize are studied in this paper.The results show that Pn and Tr and other physiological indexes have a certain effect on maize of Gs daily.Different water treatment peak value is influenced by water stress.Gs,Trand Pn present a typical single-peak curve and the peak value appears at about twelve o'clock.The leaf function recovery rate of maize after water recovery is related to water ... |
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| Keywords: | summer maize water stress physiological indexes |
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