气吹集排式水稻分种器均匀性正交试验研究  

Orthogonal experiment study on uniformity of rice air-blowing centralized distributor

作　　者：戴亿政 程文彬 王俊钧 张飞斌 熊惠兰 陈化寨 Dai Yizheng;Cheng Wenbin;Wang Junjun;Zhang Feibin;Xiong Huilan;Chen Huazhai(School of Mechanical Engineering,Nanchang Institute of Technology,Nanchang,330099,China;Department of Mechanical Engineering,Tsinghua University,Beijing,100084,China;Yifeng County Agricultural Technology Extension Service Center,Yichun,336399,China;Wannian County Agricultural and Rural Industrial Development Service Center,Shangrao,334199,China)

机构地区：[1]南昌工程学院机械工程学院,南昌市330099 [2]清华大学机械系,北京市100084 [3]宜丰县农业技术推广服务中心,江西宜春336399 [4]万年县农业农村产业发展服务中心,江西上饶334199

出　　处：《中国农机化学报》2025年第1期1-7,共7页Journal of Chinese Agricultural Mechanization

基　　金：江西省自然科学基金面上项目(20242BAB25364);江西省教育科技研究项目(GJJ2401412);南昌工程学院博士科研启动项目(2023kyqd014)。

摘　　要：为明晰影响分种器分种均匀性的因素及程度,基于气吹集排式直播生产技术,设计等密度流场分种器,自制QLBZ-1电控分种均匀性试验台。以分种器均匀性功能试验为基础,采用四元二次正交试验分析均匀性影响因素,并在正交试验结果基础上进行单因素对比试验应用。台架试验结果表明,影响分种器分种均匀性的因素有输入气压和输送管波纹厚度,与排种轴转速和排种量无关;并且输入气压和波纹厚度相互作用对均匀性起作用,气压大小对变异系数大小有二次关系,分种器工作时气压应保持大于临界气压,适当增加波纹厚度有利于提高分种均匀性。分种器行间、行内分种变异系数均可达5%以内,为后期相关零件结构台架对比试验提供数据参考。In order to clarify the uniformity factors and degrees of seeds distributor,an equal density flow field seeds distributor was designed based on the air-blowing centralized direct seeding production technology,and a QLBZ-1 electronically controlled seeds uniformity distributing test bench was self-made.Based on the uniformity function test of the seeds distributor,the uniformity influencing factors were analyzed by four-element quadratic orthogonal test,and the single factor comparison test was carried out on the basis of the orthogonal test results.The results of the bench test showed that the factors affecting the uniformity of the seeds distributor were the input pressure and the conveying pipe corrugation thickness,unrelated to the seeding shaft rotation speed and seeding rate.In addition,the interaction between the input air pressure and the corrugation thickness played a role in the uniformity.The air pressure had a quadratic relationship with the coefficient of variation.The air pressure should be kept higher than the critical air pressure when the seeds distributor was working,and the appropriate increase of the corrugation thickness was beneficial to improve the seeds distributing uniformity.The coefficient of variation of the intra-row and inter-row were less than 5%,a data reference for the later comparative test of related parts structure would be provided by the research conclusion.

关 键 词：农业机械 水稻 气吹集排式 分种器 均匀性 正交试验 

分 类 号：S223.25[农业科学—农业机械化工程]