玉米种子抗压特性及裂纹生成规律  

Anti-pressing Properties and Crack Formation Law of Corn Seed

作　　者：李心平[1] 李玉柱[1] 马福丽[1] 高连兴[2] 

机构地区：[1]河南科技大学车辆与动力工程学院,洛阳471003 [2]沈阳农业大学工程学院,沈阳110161

出　　处：《农业机械学报》2011年第8期94-98,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：高等学校博士学科点专项科研基金资助项目(200801570007);河南省教育厅自然科学研究计划资助项目(2011B210003);河南科技大学自然科学领域科研创新能力培育基金资助项目(2009CZ0004)和河南科技大学博士科研启动基金资助项目(09001235)

摘　　要：为降低玉米种子脱粒过程中的机械损伤,掌握玉米种子抗压特性及其裂纹生成规律,在LDS微机控制电子拉压试验机上,对不同品种的玉米种子进行了静态压缩试验。试验结果表明:最大破裂力随含水率的增加而降低;同一品种在相同含水率下,平放时最大破裂力最大,立放时最小,侧放时居中;同一放置方式时,不同品种玉米种子承载压力的能力不同;不同放置方式时,不同受压面生成裂纹的形状、部位和规律不同。For reducing mechanical damage of corn seed in the process of threshing and mastering the law on anti-pressing properties and crack formation of corn seed,static compresses experiment of various varieties corn seeds were carried out on LDS microcomputer control and electron draw-press test-machine.Results showed that the largest breaking power would decrease with the increasing of seed humidity ratio.The largest breaking power was the biggest with level-placing manner and in turn flank-placing manner took second place,perpendicular-placing manner was the smallest.Anti-pressing competence of various varieties corn seeds was different under same placing manners.The shape,position and law of crack in various surface loaded was different under different placing manners.

关 键 词：玉米种子 抗压特性 裂纹 生成规律 

分 类 号：S313[农业科学—作物栽培与耕作技术] S513[农业科学—农艺学]