期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2014

40

2

216-220

10.13331/j.cnki.jhau.2014.02.022

国家“十二·五”科技支撑计划项目

本校为第一机构

针对现有气力式排种器对小粒径种子因吸附力大于重力造成落种困难的不足,设计了1种负压吸种、正压吹种的气力滚筒式小粒径种子排种器。选取油菜籽(球形)、芝麻种子(扁卵圆形)进行试验,以合格率为评价指标,通过转速、吸种压力、吹种压力、振动幅度等影响因素验证排种器的适应性。正交试验结果表明:该排种器能够适应球形、扁卵圆形种子的精播,合格率均能达到90%,球形种子精播效果优于扁卵圆形种子。影响油菜籽精播合格率的因素大小依次为吸种负压、振动幅度、转速、吹种正压;影响芝麻精播合格率的因素大小依次为转速、振动幅度、吹种正压、吸种负压。

A small-sized seed pneumatic cylinder-seeder which adopts negative pressure to adsorb and positive pressure to blow seeds was designed for available seed metering device at present exhibiting sowing difficulty caused by adsorption affinity to the seed exceeding its gravity. Rape （sphere） and sesame （pancake） seeds were selected to test and verify the adaptability of the seeder based on pass percentage of seeding considering rotation rate, adsorbing pressure, blowing pressure, amplitude of vibration. The result of orthogonal tests indicated ...