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棉花学报  2009 

棉花茎枝叶形态模型研究

DOI: 1002-7807(2009)03-0206-06, PP. 206-211

Keywords: 棉花,主茎叶,主茎节间,果枝叶,果节,形态模型

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Abstract:

在2005-2006年盆栽试验基础上,系统分析了生态因子对棉花主茎叶、果枝叶和主茎节间、果节形态发生的影响,量化了温度、氮素、水分、化控(DPC)等与棉花各器官形态建成的关系,构建了基于有效积温(GDD)、以Logistic模型为基础的棉花主茎和果枝的叶片长度、宽度、叶柄长度及主茎节间、果节长度和粗度形态发生的动态模型。利用不同氮素水平、不同品种、水分、化控试验资料对模型进行了检验。结果表明,棉花主茎和果枝的叶片长度和宽度、叶柄长度及主茎节间、果节长度和粗度的模拟值与观察值之间均方差根(RMSE)分别为0.66cm、0.87cm、0.77cm、0.57cm、0.77mm、0.43cm、0.55cm、0.43cm、0.73cm、0.56mm,棉花器官形态发生的模拟值与观测值具有较好的吻合度,说明模型具有较好的预测性和准确性

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