作物茎秆在生长期易发生弯曲变形，给计算机可视化仿真带来挑战。采用微分分析方法，探究茎秆物理应力应变关系，提出柔性茎秆可视化仿真方法。首先建立拉伸、弯曲、剪切和扭转载荷下的茎秆力学模型；其次构建基于半边结构和曲面造型的几何模型；最后采用C + +和OpenGL实现可视化仿真。实验分析不同品种茎秆弯曲应力应变，结果表明该方法可较准确模拟茎秆形变过程，基于物理力学的模型可确保弯曲仿真精度，为选育抗倒伏品种提供新型信息化分析工具。

During growth, crop stalks are prone to bending deformation, posing challenges for computer visualization simulation. A differential analysis method was employed to investigate the physical stress-strain relationship of stalks, and a visualization simulation method was proposed for flexible stalks. Firstly, a mechanical model of the stalk under tensile, bending, shear, and torsional loads was established. Secondly, a geometric model based on a semi-structural approach and surface modeling was constructed. Finally, C + + and OpenGL were utilized to implement the visualization simulation. Experimental analysis of the bending stress-strain characteristics of stalks from different varieties was conducted. The results demonstrate that this method can relatively accurately simulate the deformation process of stalks. The physics-based model ensures the accuracy of bending simulation, providing a novel informatics analysis tool for selecting and breeding lodging-resistant crop varieties.