窝眼式半夏排种器关键部件优化设计与研究

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中图分类号：S223.2 文献标识码：A 文章编号：2095-5553（2026）03-0035-09

Abstract：Tomeettheurgent needformechanizedplantingof pineliatuberandenhancetheperformanceof existing seeding equipment，a nest-eye type seed-metering device for pinelia tuber was developed.Basedon analyses of seed-filing behaviorand sed-throwing trajectory，thekeystructural parametersof thedevicewere determined， adoptingathre-row hole arrangement inastaggeredtriangularconfiguration.Using thequalified index，missed index，and multiple index asevaluation criteria，a quadraticrotational orthogonalcomposite test wascarried out through discreteelement simulation.Amathematicalregressionmodelwasestablishedtodescribetherelationships between the device parameters and the evaluation indices.The results clarified how seed whel speed，numberof holes perrow，sedguide tubeinclinationangle，andtheirinteractionsafectseeding performance.Multi-objective optimization identified the optimal parameter combination as a seed wheel speed of 26.25Δr/min ，28 holes per row， and seed guide tube inclination angle of 43.81∘ ，yielding a qualified index of 95.20% ，amissed index of 4.92% ， and multiple indexof 4.45% .Field experiments further verified the model predictions.Under the optimized parameter settings and within an operating speed range of 0.3-0.7m/s ，meeting the agronomic requirements for pinellia tuber sowing.

Keywords：pineliatuber；precision seder；seed-metering device；nest-eye type；structural parameters；orthogonal experimental design

0 引言

半夏属天南星科的多年生草本植物，因其具有燥湿化痰、降逆止呕等显著药学功效，在我国贵州、云南和甘肃等省作为重要药用经济作物被广泛种植[1，2]。（剩余16235字）