| 地下水埋深对夏玉米根冠生长和耗水量的影响 |
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| 引用本文： | 刘战东,肖俊夫,俞建河,南纪琴,刘祖贵.地下水埋深对夏玉米根冠生长和耗水量的影响[J].灌溉排水学报,2011,30(4). |
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| 作者姓名： | 刘战东 肖俊夫 俞建河 南纪琴 刘祖贵 |
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| 作者单位： | 1. 中国农业科学院农田灌溉研究所,河南新乡,453003
2. 天长二峰灌溉试验站,安徽天长,239300 |
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| 基金项目： | 国家现代农业产业技术体系建设专项资金资助(nycytx-02) |
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| 摘 要： | 利用排水式蒸渗仪,借助自制的Mariotte瓶装置,通过设置6种地下水埋深控制处理(地下水位埋深分别为0.2、0.4、0.6、0.8、1.01、.2m),探讨了不同地下水埋深对夏玉米的地上部分、根系生物量及耗水量的影响。结果表明,夏玉米株高和冠层叶面积随地下水埋深减小有增加的趋势,但是当地下水埋深减小到一定程度时就会抑制株高、叶面积,地下水埋深0.6m处理株高和叶面积系数(LAI)最大。各土层根系及其总生物量随地下水埋深增大而增大;地上部总生物量与地下部根生物量的比值随地下水埋深的增大呈明显减少的趋势。夏玉米全生育期和各阶段耗水量分别与地下水埋深呈较好的负相关关系,达到极显著水平(P<0.01);地下水补给量占耗水量的比例随地下水埋深的增大而逐步降低。研究结果可为江淮丘陵区夏玉米灌溉制度的制定及农田排水工程的设计提供参考依据。
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| 关 键 词： | 夏玉米 地下水位埋深 株高 叶面积指数 根系生物量 地下水补给量 耗水量 |
Effects of Different Groundwater Depths on Root and Shoot growth and Water Consumption of Summer Maize |
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| LIU Zhan-dong,XIAO Jun-fu,YU Jian-he,NAN Ji-qin,LIU Zu-gui.Effects of Different Groundwater Depths on Root and Shoot growth and Water Consumption of Summer Maize[J].Journal of Irrigation and Drainage,2011,30(4). |
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| Authors: | LIU Zhan-dong XIAO Jun-fu YU Jian-he NAN Ji-qin LIU Zu-gui |
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| Institution: | LIU Zhan-dong1,XIAO Jun-fu1,YU Jian-he2,NAN Ji-qin1,LIU Zu-gui1 (1.Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Xinxiang 453003,China,2.Erfeng Irrigation Experimental Station,Tianchang 239300,China) |
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| Abstract: | Through setting 6 treatments with groundwater depth of 0.2 m(T1),0.4 m(T2),0.6 m(T3),0.8 m(T4),1.0 m(T5) and 1.2 m(T6),the root and shoot growth,and water consumption of summer maize were investigated under different groundwater depths controlled by Mariotte bottle devices in drainable lysimeters.Results showed that plant height and leaf area increased with the decreasing of the groundwater depth,while the groundwater depth lowered to a certain extent,the shoot growth of Maize would be inhibited.Plant heigh... |
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| Keywords: | summer maize groundwater depth plant height LAI root biomass groundwater recharge water consumption |
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