在试验观测的基础上,通过对水稻叶片在不同时期、等比例截断点的叶长与叶宽之间定量关系的分析,利用一条二维曲线与多段3阶B样条联合曲线共同构建水稻叶片几何模型,以便更准确地模拟出水稻叶片的虚拟生长.实践证明:该方法能够较为准确地根据叶长、叶宽、叶形等参数模拟水稻生长叶片,且与生产中水稻叶特征变化相一致.利用水稻叶片在各时期的空间坐标试验数据对叶曲线方程进行模拟分析,结果表明基于多段式等比例点的叶曲线方程可以更加准确、可靠地表现水稻叶曲线特征.%By analyzing the relationship between the same proportion leaf length and leaf wide at different stages, this paper makes use of a 2D curve and multi - segment 3 - order B curve to build a rice leaf geometric model in order to more accurately simulate the growth of rice leaf. The method can simulate more accurately the rice leaf growth according to leaf parameters such as leaf width, leaf length and so on. By using the experiment data of space coordinates on the leaf to stimulate curve equation. The results show that the equation Based on Multi - segment & Proportion method can incarnate the characters of rice leaf's curve more accurately and reliably.
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