基于形态参数的水稻根系三维建模及可视化  

Architectural parameter-based three dimensional modeling and visualization of rice roots

作　　者：徐其军[1] 汤亮[1] 顾东祥[1] 姜海燕[1] 曹卫星[1] 朱艳[1] 

机构地区：[1]江苏省信息农业高技术研究重点实验室南京农业大学,南京210095

出　　处：《农业工程学报》2010年第10期188-194,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家"863"计划项目(2006AA10Z230;2007AA10Z225);国家自然科学基金项目(30800136);江苏省自然科学基金项目(BK2009307);江苏省科技支撑项目(BE2009342)资助

摘　　要：构建基于形态特征参数的水稻根系几何模型,实现不同生长条件下水稻根系生长动态的三维可视化。本文通过分析水稻根尖生长随生育进程的变化模式,构建了水稻单根三维显示模型,包括根节点初始位置和生长方向的确定以及根轴的空间模拟等;进一步结合水稻根系拓扑结构,以生长度日(GDD)为驱动因子,建立了水稻根系三维重构模型,包括不定根初始发生时间和位置、不定根初始伸展角度、不定根伸长速率、不定根空间分布模型等;然后在Visual C++环境下,结合可视化显示模块、场景控制模块、人机交互界面和数据库模块等,研制了水稻根系三维可视化生长系统,并基于三维可视化生长系统模拟了不同条件下水稻根系的三维形态。研究结果为建立完整水稻植株可视化生长系统奠定了基础,同时也有助于为其他作物根系的可视化研究提供参考。The objective of this paper was to develop a morphological parameter-based root geometric model of rice and realize the dynamic three-dimensional visualization of rice roots under different growth conditions.The three-dimensional display model of single root of rice was developed by analyzing the change patterns of root-tip growth with development progress,including the sub-models of initial location and growth orientation of root node,and the spatial elongation curve of root axis.By integrating the topological structure of rice root,the whole three-dimensional visualization model of rice root was established using GDD as driving factor,including the sub-models of the initial emergence time and location,initial extension angle,elongation rate and spatial distribution of adventitious root in rice.Finally,by integrating the sub-modules of visualization display,scene control,human-machine interface and database management on the platform of Visual C＋＋,the three-dimensional visualization system of rice root was established,and the three-dimensional morphology of rice root under different growth conditions was simulated based on this system.These results could lay a foundation for development of visual rice growth system,and for reference to visualization studies in other crops.

关 键 词：水稻 根系 三维建模 可视化 

分 类 号：S511[农业科学—作物学]