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工厂化育苗是三七产业化发展的必然选择,精密播种机是实现工厂化育苗的关键设备。基于当前广泛使用的气吸针式与气吸滚筒式精密播种机的排种器,分析种子在排种过程中的受力与运动状况,提炼出影响播种性能的相关参数的关系式,包括:①影响种子抛离状态的种盘振动频率、振幅和种盘安装倾角的关系;②吸种临界气流速度、携种临界气流速度与种子物理机械特性及种盘安装尺寸的关系;③排种器的运动速度与排种部件安装角度、排种高度、穴盘运动速度等的关系;研究结果为三七精密排种器的选型与改进设计提供理论依据和技术支撑。
Planting seedlings is the inevitable choice for the industrialization development of Panax notoginseng, and the precision seed sowing machine is the key equipment to realize the industrialized seedling raising. Based on the widely used seed metering device of gas-suction needle-type and air-suction roller precision seeder, the force and movement status of seed in the process of seeding is analyzed, and the relationship between the parameters related to sowing performance is deduced. ① the relationship between seed vibration frequency and amplitude and seed plate installation inclination affecting seed throwing state; ② the relationship between critical air flow rate, seed flow rate and seed physical and mechanical properties and seed plate installation dimensions; The relationship between the movement speed and the installation angle of seeding parts, seeding height, plug movement speed and so on. The research results provide the theoretical basis and technical support for the selection and improvement design of Panax notoginseng precision seeding device.