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.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
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)
关键词
玉米种子
抗压特性
裂纹
生成规律
Corn seed
Anti-pressing properties
Crack
Formation law
