关于小麦抗倒伏数学模型及其应用研究

On Mathematic Model of Wheat Lodging-resistant and Its Application

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。

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.