新型荞麦排种器排种性能优化  

Optimization Design of New Buckwheat Seed Metering Device

作　　者：茹孟菲 张静[1] 李志伟[1] 郑德聪[1] 张秀全[1] RU Mengfei;ZHANG Jing;LI Zhiwei;ZHENG Decong;ZHANG Xiuquan(College of Engineering,Shanxi Agricultural University,Taigu Shanxi 030801,China)

机构地区：[1]山西农业大学工学院,山西太谷030801

出　　处：《农业工程》2020年第11期79-83,共5页AGRICULTURAL ENGINEERING

基　　金：山西省重点研发计划项目(项目编号:201903D211005-1);晋中市科技重点研发计划(农业)项目(项目编号:202003D01100004);山西省高等学校科技创新项目(项目编号:2020LO153)。

摘　　要：确定了荞麦排种器的排种轴转速、单排阻种套孔数量及种床带速度对播量均匀性变异系数及区间种子平均粒数影响的先后顺序和最优因素组合。通过设计正交试验并利用极差法对正交试验结果进行分析,确定各因素对播量均匀性变异系数及区间种子平均粒数的影响程度及最优组合。使用极差法对变异系数的正交试验结果进行分析得R_(A)=51.74、R_(B)=2.95、R_(C)=12.03;对平均粒数的正交试验结果进行分析可得R_(A)=5.71、R_(B)=1.25、R_(C)=3.14。影响播量均匀性变异系数的先后顺序依次为阻种套单排孔数量、种床带速度及排种轴转速。影响平均粒数的先后顺序依次为阻种套单排孔数量、种床带速度及排种轴转速。在阻种套单排孔数量12、种床带速度5 km/h及转速160 r/min的条件下,荞麦排种器的播量均匀性变异系数达20.89%,为最佳指标。Sequence and optimal factor combination of rotation speed of seeding shaft of buckwheat seeding device,number of single-row resisting sleeve holes and speed of seed bed belt on uniformity variation coefficient of sowing amount and average number of seeds in the interval were determined.By designing orthogonal experiment and using extreme range method to analyze orthogonal experiment results,influence degree and optimal combination of various factors on coefficient of uniformity of sowing volume uniformity and average number of seeds in the interval were determined.Using range method to analyze orthogonal results of coefficient of variation,R_(A)=51.74,R_(B)=2.95,R_(C)=12.03;analyzing orthogonal results of average number of grains,R_(A)=5.71,R_(B)=1.25,R_(C)=3.14.The order of variation coefficient affecting uniformity of seeding rate was number of single-row holes in seed-resistance sleeve,speed of seed bed belt and rotation speed of seed shaft.The order affecting average number of particles was number of single-row holes in seed-resistance sleeve,speed of seed bed belt,and rotation speed of seed shaft.Under condition that number of single row holes in seed resistance set was 12,speed of seed bed belt was 5 km/h and rotation speed was 160 r/min,uniformity variation coefficient of sowing rate of buckwheat seeding device reached 20.89%,was the best indicator.

关 键 词：荞麦 排种器 排种性能 优化 

分 类 号：S223.2[农业科学—农业机械化工程]