| 关于小麦抗倒伏数学模型及其应用研究 |
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| 引用本文： | 陈毅平,陈勤. 关于小麦抗倒伏数学模型及其应用研究[J]. 绵阳师范学院学报, 2012, 31(2): 22-27 |
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| 作者姓名： | 陈毅平 陈勤 |
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| 作者单位： | 1. 南京财经大学应用数学学院,江苏南京,210046
2. 解放军后勤工程学院信息系,重庆,401311 |
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| 摘 要： | 该文针对小麦抗倒伏的问题,分别将小麦茎秆按刚/弹性材料处理,通过微元法思想分别计算出各个节点处最大弯应力及安全应力,得出麦秆折断的条件是:实际弯应力与临界弯应力最接近的那个节点,从而建立了小麦茎秆抗倒伏的数学模型。最后应用该模型对2007年数据中腊熟期各品种的抗倒伏风速进行了计算。
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| 关 键 词： | 抗倒伏 微元法 弯应力 安全应力 |
On Mathematic Model of Wheat Lodging-resistant and Its Application |
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| Affiliation: | CHEN Yi-ping(School of Applied Mathematics,Nanjing University of Finance,Nanjing,Jiangsu 210046) |
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| Abstract: | In this paper,with the problem of wheat lodging-resistant,respectively,according to the wheat stem rigid and flexible material handling,it were thought by the micro-element method to calculate the maximum bending stress and safety stress at each node,draw straw to the break conditions are: the actual critical bending stress and bending stress are closest to that node,then establishing a mathematical model of wheat lodging.Finally,the application model in December 2007 maturity data of all varieties of lodging wind speed were calculated. |
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| Keywords: | Lodging-resistant micro-element method bending stress safe stress |
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