拨禾指式不对行玉米收获装置的试验

为解决玉米收获机不对行收获问题，采用先割断秸秆、再拨禾摘穗技术，提高玉米收获机对种植行距的适应性；通过对拨禾指、甩刀与摘穗机构的优化组合，设计、制作出拨禾指式玉米收获装置，对关键技术及影响因素进行了分析，提出了拨禾指将玉米秸秆分禾、喂入、输送过程中的技术条件。通过在中国东北高产垄作和黄淮海一年两熟玉米种植区进行试验表明，各项技术指标符合国家标准，行距的适应范围为300～800 mm，对机具跨区作业、机器利用率和增加农机户收入具有现实意义和实用性。

Experiment of no-row corn harvesting device with finger wheel

To solve problem of corn harvesting under different row spacing condition, a technology about ear snapped after stalk cutting and conveying was proposed, and adaptability for row spacing was enhanced by the technology. Corn harvesting device with finger wheel was designed and fabricated by optimization of finger wheel, blades and snapping unit. Through the analysis of key technologies, technology conditions of corn stalk dividing, feeding and conveying were determined. The field tests were conducted in the corn planting areas of northeast of China and Huang-Huai-Hai District. Experiment results showed that all the specifications were met with national standards, row spacing ranged from 300 mm to 800 mm. It is very important to cross regional operation of corn harvester, increase the utilization of corn harvester and enhance the income of owner.