小麦发育后期茎秆抗倒性的数学模型  

Mathematical Model of Wheat Stalk Lodging-resistance During the Later Growth Period

作　　者：卢超[1] 韩佳丽[2] 胡方军[1] 覃太贵[2] 

机构地区：[1]三峡大学机械与材料学院,湖北宜昌443002 [2]三峡大学理学院,湖北宜昌443002

出　　处：《数学的实践与认识》2012年第15期46-53,共8页Mathematics in Practice and Theory

摘　　要：针对小麦发育后期倒伏问题,建立了抗倒伏模型并分析各品种小麦的抗倒伏能力,引入了灰色关联分析模型得到小麦抗倒伏指数与外部形态参数的关联度,建立理想株型模型并在matlab环境下用遗传算法求解出理想株型结构,由小麦受麦穗自重和风载作用的抗倒伏力学模型求得各品种小麦发生茎倒的临界力和临界风速.This paper studies the lodging problem of wheat during the later growth period. We establish a lodging-resistant mathematical model to analyze the lodging-resistant capability of the given kinds of wheat.By introducing the Grey Correlation Analysis model, we get the relevancy of lodging-resistant index and external morphology parameter of the wheat.An ideal type model is set up and then solved based on Genetic Algorithm with platform MATLAB.We obtain the critical force and critical wind speed of the given kinds of wheat according to the weight of the wheat and wind loads lodging-resistant mechanical model

关 键 词：多元线性回归 灰色关联分析 遗传算法 有限元分析 

分 类 号：O242.1[理学—计算数学]