基于分形L系统的水稻根系建模方法研究  

Modeling Method for Rice Root Based on Fractal L System

作　　者：杨乐[1] 邵鹏[1] 唐建军[1] 王映龙[1] YANG Le;SHAO Peng;TANG Jian-jun;Wang Ying-long(College of Computer Information and Engineering,Jiangxi Agricultural University,Nanchang 330045,China)

机构地区：[1]江西农业大学计算机与信息工程学院,江西南昌330045

出　　处：《江西农业大学学报》2020年第2期401-406,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家自然科学基金项目(61862032)。

摘　　要：【目的】根系建模是虚拟水稻可视化模型中重要的组成部分,是认知以及研究水稻根系形态结构的重要方法,并为精确农业提供依据,本研究旨在构建仿真效果较好的水稻根系模型。【方法】利用水培法开展试验,测定水稻根系各类形态参数。【结果】构建了基于分形L系统的水稻根系模型,包括不定根模型、分枝根模型、旋转角度等信息。首先根据水稻根系形态特征解析出分形L系统的产生式,然后借助MATLAB软件实现了根系的形态模拟,最后根据模拟效果图进一步优化了分形L系统的产生式,提高了模型精度。【结论】构建完成的模型能够较好地模拟水稻根系的生长过程,在智慧农业发展过程中,具有一定的参考价值。[Objective]Root modeling plays an important role in the virtual rice visualization model,which is an important method for recognizing and studying the morphological and structural traits of rice root,and provides a basis for precise agriculture,this paper is aimed to construct a realistic rice root model.[Method]Experiments were conducted with a hydroponic method to measure morphological parameters of rice roots.[Result]A rice root model based on fractal L system was constructed,which contained the information of adventitious root model,branching root model and rotation angle.First,the production formula of fractal L system was abstracted according to the morphological characteristics of rice roots.Second,the MATLAB software was used to implement the simulation of root morphology.Finally,the production formula of fractal L system was further optimized according to the simulation results,thus the accuracy of this model was improved.[Conclusion]It is verified that the model could faithfully simulate the growth process of rice root,which provides reference for the development of smart agriculture.

关 键 词：分形L系统 水稻根系 建模 MATLAB 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]