| 水稻冠层结构的动态模拟研究 |
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| 引用本文： | 石春林,朱艳,曹卫星,金之庆.水稻冠层结构的动态模拟研究[J].作物学报,2006,32(12):1831-1835. |
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| 作者姓名： | 石春林 朱艳 曹卫星 金之庆 |
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| 作者单位： | 1南京农业大学/江苏省信息农业高技术研究重点实验室，农业部作物生长调控重点开放实验室，江苏南京210095；2 江苏省农业科学院农业资源与环境研究中心，江苏南京210014 |
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| 基金项目： | 国家高技术研究发展计划(863计划);江苏省高技术研究发展计划项目 |
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| 摘 要： | 根据水稻器官生长的生物学规律，在试验研究的基础上，结合生长模型相关输出，构建了普适性的水稻冠层拓扑结构模型。以节间及其着生叶或穗为单位，将水稻植株分解成若干生长单元，来描述水稻植株的冠层拓扑结构；利用Logistic曲线模拟器官伸长过程，并结合器官发育与叶龄关系，确定了各器官的初始伸长时间和伸长历期，构建了水稻植株冠层动态生长模型；最后对模型进行了检验，初步实现了以日为单位的虚拟水稻生长。
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| 关 键 词： | 水稻 冠层 结构 伸长模型 虚拟生长 |
| 收稿时间： | 2005-11-21 |
| 修稿时间： | 2005年11月21 |
Dynamic Simulation of Rice Canopy Structure |
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| SHI Chun-Lin,ZHU Yan,CAO Wei-Xing,JIN Zhi-Qing.Dynamic Simulation of Rice Canopy Structure[J].Acta Agronomica Sinica,2006,32(12):1831-1835. |
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| Authors: | SHI Chun-Lin ZHU Yan CAO Wei-Xing JIN Zhi-Qing |
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| 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, Jiangsu;2.Research Center of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, China |
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| Abstract: | Simulating crop growth visually on computer can help to better understand crop growth pattern and analyze the relationship between architecture and function.Some architecture models were developed to simulate development of crops in a given time interval,such as leaf age and growth unit.Most of them didn't discuss the organ elongation processes and daily architecture change.So in order to realize more accurate and delicate crop growth,it is important to develop more applicable models to describe the dynamic change of crop architecture.On the basis of rice biological laws and field experiments,combined with the output of rice growth model,a general organ elongation model and structural model for rice were developed.Firstly,growth unit,containing internode and its adjacent leaf or ear,was used to describe topological structure of rice plant.Then,with logistic curve for simulating organ elongation and according to the relationship of organ elongation and leaf age,that is,synchronous emerging among the n th leaf blade,the n-1 st leaf sheath and the internode between n-2 th and n-3 rd leaf,a dynamical structural model of rice plant was developed utilizing daily output of growth model and leaf age model.The model could give initial elongation GDD,elongation duration in degree days and curve parameters for each organ.So plant architecture could be simulated at any GDD with geometrical parameters of organs.The model was validated with the data from field experiments.The results showed that the model could well simulate plant architecture and organ elongation of rice with RMSE 0.284 cm,applicable to different varieties and environments.Finally using L-system to describe and simulate plant structure,morphological representation of rice plant and canopy at seedling,elongation and anthesis stages was realized.Combined with the output of rice growth model,a general model was developed to simulate the daily architecture change in rice canopy.The model could offer more accurate and delicate rice growth visually. |
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| Keywords: | Rice Canopy Structure Elongation model Virtual growth |
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