关键词: 马铃薯, 排种器, 种层扰动, 种层高度, 充种性能

Abstract: Potato seed metering device is the core working component to achieve precise seeding of potato. Its seed metering performance is closely related to the dispersion degree of population. The dispersion degree of population is the key to ensure the smooth filling of seeds, and the seed layer height and seed layer disturbance of seed metering device are the key factors affecting the filling performance. This paper introduces the main structural forms of the existing potato seed metering device, analyzes the methods of mechanical disturbance and airflow disturbance to improve the population dispersion, and different seed feeding devices to control the seed layer height and population mobility in the seed filling area to improve the seed filling performance of the seed metering device. The problems existing in the seed layer disturbance control method of potato seed metering device were summarized as follows: there were few studies on the establishment of mathematical model of population disturbance and population motion analysis, and the methods for improving the seed filling performance of potato seed metering device by seed layer disturbance were prospected. An intermittent seed supply device with large and small seed boxes was proposed. The seed layer height was controlled by intermittent seed supply, and the population dispersion and population mobility in the seed filling area were increased by using the population disturbance generated by vibration, so as to provide reference for improving the seed filling performance of potato seed metering device.

Key words: potato, seed metering device, seed layer disturbance, seed layer height, seed filling performance