Extension of precision seeding technologr " is a revolution in the development of apculforal . technology and is of great significance 精密播种技术的推广是农业技术上的一场革新、意义巨大。
Precision seeding will help us to save labor and seeds , to enhance labor effeetiveness and to increase 3deld by evenly placing seeds 精密播种不仅能节省劳动力，节约良种，还能提高劳动生产率，使种子均匀分布，有利于作物生长，增加产量。
Such contents were introduced as establish ment of analysis model of precision seed metering devices , seeds generation , neighborhood search & contact detection , data transfer and software integration , etc . 介绍了精密排种器离散元法分析模型的建立、种子的生成、邻居搜索与接触判定、数据传递及软件集成方法。
Based on this method , the integration of cad software and dem analyzing software was implemented for performance of agricultural machine ' s working parts by self - development , thereby an integrated analyzing and designing system was developed for precision seed metering devices of planters 在此基础上实现了计算机辅助设计软件与离散元法性能分析软件的集成，由此开发出了一种播种机精密排种器的集成分析设计系统。
In this paper , the dispersing mechanism of rice seeding thrower is mainly looked as research object which is designed and analyzed according to mechanical vibration theory and finite element method , and the whole processes are implemented through ansys and cad . the research is a project subsided by the important subject fund of zhejiang province science and technology hall , deep fertilization teamwork machine and rice precision seeding thrower . the main research contents are summarized as follows : 1 论文以水稻精密抛秧机分秧机构? ?振动输送式机构为研究对象，依据机械振动理论对振动输送机构进行了参数化的设计和分析，使用有限元法的原理，通过有限元技术( ansys )和计算机辅助设计，在理论和虚拟仿真两方面，对振动输送机构的计算、分析、模拟和设计的全过程进行了探索和研究，并使用振动测试仪器对分仿真模型分析结果进行了试验验证。
