摘要
利用多元统计分析和微分方程建立了小麦发育后期茎秆抗倒伏的数学模型.首先,对实验所得的数据进行了预处理,建立了倒伏指数的相关模型,并在给定穗重的条件下,模拟出理想的株型结构;然后,对小麦茎秆进行受力分析,建立小麦倒伏临界力的微分方程,算出腊熟期各品种小麦的抗倒伏风速;最后,对所建模型以及相关问题和结果进行总结分析,并结合实际提出小麦育种的一些建议.
In this paper, we use multivariate analysis and differential equation to build a mathematical model about the stem lodging of the late wheat. We do with the experimental data and build lodging index modes firstly, and simulate the ideal structure of the wheat with a given spike weight. Then we do the mechanical analysis of the wheat stem, establishing the differential equation about the critical force of wheat lodging, and calculate the lodging wind speed of each kind of wheat at the mature period. At last, summarize and analyze the built modes and the problems in them, and give some suggestions to breed the wheat in practice.
出处
《数学的实践与认识》
CSCD
北大核心
2012年第15期76-86,共11页
Mathematics in Practice and Theory
关键词
多元统计分析
微分方程
倒伏指数
multivariate analysis
differential equation
lodging index
