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水稻叶片几何参数的模拟分析
引用本文:石春林,朱艳,曹卫星.水稻叶片几何参数的模拟分析[J].中国农业科学,2006,39(5):910-915.
作者姓名:石春林  朱艳  曹卫星
作者单位:南京农大农业部作物生长调控重点开放实验室
基金项目:高比容电子铝箔的研究开发与应用项目;江苏省高技术研究发展计划项目
摘    要:【目的】在生长模型输出的基础上,构建预测水稻叶片几何参数的动态模型,以便更准确地实现水稻的虚拟生长。【方法】在试验观测的基础上,分析了不同品种类型水稻分蘖与主茎同伸叶片叶长之间以及叶长与叶宽之间的定量关系,进一步耦合水稻叶龄、叶面积和茎蘖数模拟模型,进行水稻叶片几何参数变化的动态模型构建。【结果】不同品种类型水稻分蘖与主茎同伸叶片的叶长比随分蘖叶序呈二次曲线变化,叶长与叶宽的关系可用幂指数函数描述。运用独立实测资料对模型进行的初步检验显示,本模型可较好地模拟不同生长条件下水稻不同叶位叶片的几何参数。【结论】本研究构建的水稻叶片几何参数分析模型较好地体现了器官几何参数受生态环境、品种类型和栽培措施影响的形态生理规律,为水稻虚拟生长提供了可靠和普适的叶片几何特征确定方法。

关 键 词:水稻  叶片  几何参数  生长模型  虚拟生长
收稿时间:2005-05-25
修稿时间:2005-05-252006-03-23

A Simulation Analysis on Geometrical Parameters of Rice Leaf Blade
SHI Chun-lin,ZHU Yan,CAO Wei-xing.A Simulation Analysis on Geometrical Parameters of Rice Leaf Blade[J].Scientia Agricultura Sinica,2006,39(5):910-915.
Authors:SHI Chun-lin  ZHU Yan  CAO Wei-xing
Institution:1. Hi-Tech Key Laboratory of Information Agriculture of Jiangsu Province, Key Laboratory of Crop Growth Regulation of Ministry of Agriculture/Nanjing Agricultural University, Nanjing 210095; 2. Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014
Abstract:Objective] In order to realize more accurate virtual growth of rice, a dynamic model was developed to analyze geometrical parameters of leaf blade based on outputs of rice growth model, Method] Based on the experimental observations, the relationships between the tiller leaf blade length and its synchronously emerging leaf blade length on main stem and between leaf blade length and its width were quantified. Then, coupled with simulation models of leaf age, leaf area and tiller number of rice, a general model for predicting geometrical parameters of rice leaf blade was developed. Result] The ratio of tiller leaf blade length to its synchronously emerging leaf blade length on main stem changed with tiller leaf number in quadratic equation and the relationship between leaf blade length and its width could be expressed in power function, The validation of the model with independent experimental data indicated that the model could simulate the geometrical characteristics of rice leaf blade under different growth conditions. Conclusion] This study has provided a reliable and general method for modeling the geometrical parameters of rice leaf blade and reflected the morpho-physiological patterns of geometrical parameters of crop organs as affected by environmental conditions and variety types.
Keywords:Rice  Leaf blade  Geometrical parameter  Growth model  Virtual growth
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