基于EDEM的小粒径蔬菜双行导种装置设计与试验

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中图分类号：S223.2 文献标识码：A 文章编号：2095-5553（2025）10-0067-08

Abstract：Toaddress the issue of uneven seed spacing inthe planting of smal-size vegetable seeds，a single seed metering device was designed to simultaneously sow two rows. This study employed EDEM simulation software to analyze the trajectory of seed movement and uncover thecauses of disordered seed flow during transportation.By examining the forces acting onthe seeds throughout the sowing process，the key factors afecting the profile curve of the sowing tubewere identified.The velocityof the seeds during sowing Was alsoanalyzed，leading to the derivatio of an equationand structural parameters for the optimal sowing tube profile curve.Based on this equation，four sowing device models with varying tube heights were developed.Simulationand analysisof thesedevices revealed thatallfourachieved plant spacing qualification rates above 90% . Notably，the seeding device with a tube height of 160mm exhibited the most favorable performance，with an average plant spacing qualification rate of 92% ，anaverage coefficient of variation in row spacing of 5.72% ，andan average spacing error of 2.08% .Tovalidate the simulation results，bench tests were conducted using the 160mm height seeding device. The tests confirmed that the average plant spacing qualification rate ranged between 89.90% and 93.94% ，the coefficient of variation in row spacing ranged from 5.88% to 6.24% ，and the spacing error ranged from 1.64% to 1.90% . These values were generally consistent with the simulation results and met bothnationaltechnical standardsforsedingqualityandagronomicrequirements.Overall，thestudydemonstrated thatthe sowing tube profile design was reasonable and that the device achieved reliable seeding performance.

Keywords：vegetable； smallparticle；precision seeding；double-row device；seed guiding devi

0 引言

我国蔬菜种植面积和年产量居世界第一位，蔬菜产业已成为我国农业经济的支柱和优势产业。（剩余12400字）