农机化研究2025，Vol.47Issue(1)：39-45,7.DOI:10.13427/j.issn.1003-188X.2025.01.007
苜蓿小区育种气吸式排种器设计与试验
Design and Experiment of Air Suction Seed Metering Device for Alfalfa Plot Breeding
摘要
Abstract
In order to improve the mechanization level of alfalfa plot breeding and sowing,an air suction seed metering device for alfalfa plot breeding was designed.Firstly,seeder structure and working principle are described.Then,the main structural parameters of the metering device are calculated theoretically,and the mechanical characteristics of the metering device during the filling process are analyzed to find the key factors affecting the metering effect.In order to ob-tain the best performance parameters of the seed metering device,the design of quadratic regression orthogonal rotational combination experiments were conducted.The speed of the seeding tray,working pressure and the number of seed suc-tion holes were taken as the test factors.The pass rate,replay rate and missed broadcast rate were taken as the perform-ance indicators,and the regression equation analysis and response surface analysis of the test data were analyzed by De-sign-Expert software.The primary and secondary relationships of each test factor affecting the test indicators were ob-tained.Determine the best combination of seed metering parameters:when the rotating speed of seed metering disc is 24.2 r/min,the number of seed sucking holes is 36,and the working pressure is 3.7 kPa,the rate of qualified is 92.81%,the rate of replanting is 3.35%,and the rate of missed seeding is 3.42%.Through the verification test,the seed metering device can achieve effective seed metering,which provides a theoretical basis for subsequent research and has reference value.关键词
苜蓿/小区育种/气吸式排种器Key words
alfalfa/plot breeding/air suction seed metering device分类
农业工程引用本文复制引用
任德港,王东伟,李墨贤,李绪,马振家,董彤彤,常学良,马世宽,于华丽..苜蓿小区育种气吸式排种器设计与试验[J].农机化研究,2025,47(1):39-45,7.基金项目
国家重点研发计划项目(2021CXGC010813) （2021CXGC010813）
河北省重点研发计划项目(21327215D) （21327215D）
