摘要
在水稻工厂化穴盘育秧播种过程中,排种器的投种过程是影响播种性能的最后环节,为满足排种器播种性能要求,对投种过程中种子运动规律、投种机理等进行了理论分析。把投种过程分为及时投种、延迟投种和强制投种过程,推导出每个过程中排种器各参数与穴盘运动速度间的关系式,并对投种过程进行了高速摄像分析,验证了理论分析的合理性。建立了型孔长度与排种器相关参数间的限制关系式,分析表明合理选择排种器设计参数,能够保证种子不与型孔另一边壁发生碰撞,实现顺利投种。
In the factory rice cell seedling,dropping process of rice seed metering device affects the seeding performance. To meet the requirement of the rice seed metering device,rice seed movement discipline and mechanism in the dropping process were analyzed theoretically. Dropping process was divided three parts：timely dropping process,delayed dropping process,and enforcement dropping process. The relationship between cell tray velocity and the parameters of seed metering device was derived. Dropping process was analyzed based on high-speed photography technology. Analysis of dropping process provided a basis for the establishment of seed metering device design theory and optimal design. The relationship between the type hole length and the parameters of seed metering device was established. Analysis showed that rational parameters of metering device could ensure seed won＇t have wall-type collision with the other side.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2010年第8期39-42,71,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
"十一五"国家科技支撑计划资助项目(2006BDA28B00-05)
关键词
农业机械
水稻
排种器
穴盘
投种过程
分析
Agricultural machinery
Rice
Metering device
Cell tray
Dropping process
Analysis
