小麦茎秆的拉弯性能研究

On the Measurement of Tensile and Bending Mechanical Properties of Wheat Stalks

以成熟期的京冬八号小麦茎秆为研究对象，分正常施肥和未施肥2个组，进行了不同节间茎的拉伸和弯曲性能试验。结果表明，小麦茎弹性模量值在2．371～2．604Gpa，叶鞘的弹性模量值在1.246～1．391Gpa。带叶鞘小麦茎的抗弯刚度在0．0067～0．0104Nm^2。

In this paper, wheat stalks in their fully mature stage were researched. Tensile and bending tests were carried out, on wheat stalks of different fertilization conditions（with and without fertilizatioin）, to obtain the Young＇s modulus, bending ridigity and relevant changing trends. Based on the experimental, data, the Young＇s modulus ranged from 2. 371 to 2. 604Gpa, the Young＇s modulus of sheath ranged from 1. 246 to 21. 391Gpa, the rigidity modulus of stalk with sheath ranged from 0. 0067 to 0. 0104 Nm2 This study will not only provide a reference for the high-producing and breeding,but also be a fundamental study of wheat lodging.