| 通径分析在冬小麦受渍胁迫诊断指标敏感性分析中的应用 |
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| 引用本文： | 邵光成,俞双恩,刘娜,陈立娜,郭瑞琪.通径分析在冬小麦受渍胁迫诊断指标敏感性分析中的应用[J].应用基础与工程科学学报,2011,19(4):527-534. |
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| 作者姓名： | 邵光成 俞双恩 刘娜 陈立娜 郭瑞琪 |
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| 作者单位： | 1. 南方地区高效灌排与农业水土环境教育部重点实验室,江苏南京210098;河海大学水利水电学院,江苏南京210098
2. 南京信息工程大学经管学院,江苏南京,210044 |
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| 基金项目： | “十一五”国家科技支撑计划(2006BAD11B06); 国家自然科学重点基金项目(50839002);国家自然科学基金(51009047); 中央高校基本科研业务费(2009B09014); 江苏高校优势学科建设工程资助项目(水利工程) |
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| 摘 要： | 根据冬小麦测坑试验结果,采用相关分析和通径分析的方法,计算了以叶片光合速率Pn、气孔导度Cond、蒸腾速率Tr、叶面温度T1、光合有效辐射PAR和地下水位累积水深SEW50 6种排水决策指标为自变量对作物阶段干物质产量的通径系数、相关系数、决定系数和对回归方程估测可靠程度R2的总贡献,建立了作物受渍胁迫诊断指标对干物质产量的回归方程.结果表明,影响干物质产量最大的是叶片光合速率,其次是地下水累计水深和叶片温度,决定系数分析结果与通径分析结果有一致的变化趋势.通过自变量指标的减少对结果的影响分析发现,在追求受渍胁迫下冬小麦干物质生产最优目标时,排水决策指标要注意叶片光合速率、地下水累计水深和叶片温度的变化.
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| 关 键 词： | 冬小麦 通径分析 排水决策 指标 敏感性 |
Application of Path Analysis in Sensitivity Analysis on Stress Indicator from Subsurface Water Logging of Winter Wheat |
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| SHAO Guangcheng,YU Shuangen,LIU Na,CHEN Lina,GUO Ruiqi.Application of Path Analysis in Sensitivity Analysis on Stress Indicator from Subsurface Water Logging of Winter Wheat[J].Journal of Basic Science and Engineering,2011,19(4):527-534. |
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| Authors: | SHAO Guangcheng YU Shuangen LIU Na CHEN Lina GUO Ruiqi |
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| Institution: | SHAO Guangcheng1,2,YU Shuangen1,LIU Na3,CHEN Lina1,GUO Ruiqi1,2 (1.Key Laboratory of Efficient Irrigation-Drainage and Agricultural Soil-Water Environment in Southern China,Ministry of Education,Nanjing 210098,China,2.College of Water Conservancy and Hydropower Engineering,Hohai University,3.School of Economics and Management,Nanjing University of Information Science & Technology,Nanjing 210044,China) |
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| Abstract: | Based on the data of winter wheat by test-pit experiment,six kinds of drainage decision-making indicators were explored with correlation analysis and path analysis methods,such as leaf rate of photosynthesis(Pn),stomata conductance(Cond),transpiration rate(Tr),leaf temperature(Tl),photosynthesis available radiation(PAR)and cumulative depth of groundwater level(SEW50).The coefficient of determination and the overall contribution of R2 the reliability of the regression equation of the independent variables on... |
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| Keywords: | winter wheat path analysis drainage decision-making indicator sensitivity |
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