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中国农机化学报

中国农机化学报 ›› 2024, Vol. 45 ›› Issue (3): 8-13.DOI: 10.13733/j.jcam.issn.2095-5553.2024.03.002

• 农业装备工程 • 上一篇    下一篇

复式大蒜种子方向控制装置设计与试验

张鹏飞,刘冬梅,崔荣江,徐亚丹   

  • 出版日期:2024-03-15 发布日期:2024-04-16
  • 基金资助:
    国家自然科学基金资助项目(51805306);杭州市农业和社会发展一般项目(202203B08)

Design and experiment of directional control device for compound garlic seeds

Zhang Pengfei, Liu Dongmei, Cui Rongjiang, Xu Yadan   

  • Online:2024-03-15 Published:2024-04-16

摘要: 为提高大蒜播种机对杂交蒜的播种正芽率,提出串联使用大蒜种子重心靠下和大蒜种子芽尖细长特征进行种子方向控制的方法,即在排种器运种阶段设计分段式护种槽,利用大蒜种子重心靠下特征提高种子直立进入定向器的概率,在换向阶段设计弧形开口定向器,使大蒜种子芽尖尽可能露出定向器,提高短芽尖大蒜鳞芽的正芽率。以定向速度和种子芽尖长度为试验因素,正芽率为试验指标,进行台架试验,结果表明,蒜瓣芽尖长度对播种机正芽率影响较为明显,正芽率随定向速度的增加而降低。以金乡杂交蒜为试验对象,对定向系统进行田间播种性能试验,试验结果表明:行走速度为0.14~0.19 m/s时,金乡杂交蒜的正芽率达85%,整体满足大蒜播种农艺要求。串联使用大蒜种子两种物理特征从作业原理上可提高大蒜种子定向稳定性,为大蒜播种机械化发展提供参考。

关键词: 大蒜播种机, 复式定向, 弧形开口定向器, 分段式护种槽

Abstract: In order to improve the seeding bud rate of hybrid garlic by planting garlic seeder, a method was put forward to control the direction of garlic seeds by using the lower center of gravity of garlic seeds and the elongated sprout tips of garlic seeds in series, namely,the sectional kind of groove was designed in the metering device stage, using garlic seed characteristics under focus on improving seed straight into the orientation of probability. In the commutation stage, the arc opening directional device was designed, the germination tips of garlic seeds were exposed as much as possible to improve the positive germination rate of garlic scaly buds with short bud tips. With orientation speed and seed tip length as test factors and positive bud rate as test index, bench test was conducted. The results showed that the effect of garlic bud tip length on the positive bud rate was obvious, and the positive bud rate decreased with the increase of orientation speed. Taking Jinxiang hybrid garlic as the experimental object, the field sowing performance of the directional system was tested. The experimental results showed that the positive budding rate of Jinxiang hybrid garlic reached about 85% when the walking speed was in the range of 0.14-0.19 m/s, which generally met the agronomic requirements of garlic sowing. Using the two physical characteristics of garlic seeds in series can improve the directional stability of garlic seeds from the operating principle. This study will provide a reference for the development of garlic seeding mechanization.

Key words: garlic seed drill, compound orientation, arc open directional device, segmental seed protection groove

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