对播种机构进行了改进，设计了动力驱动粉碎刀轴与圆盘开沟器组合的防堵机构。

A new anti-blockage mechanism, which combines the powered chopping and disc opener, was designed and tested.

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仿形机构是播种机的重要工作机构。

The profiling mechanism is important in the planter.

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为与铲式成穴器的结构特点相适应，选择倾斜圆盘勺式玉米精密排种器作为打穴播种机的排种机构。

For the usage of the spade soil opener in a punch planter the precision metering device with declined scoop type disc was selected for maize seeds.

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