To further enhance the country's air-suction seeder performance, the paper on the air-suction Precision planter for a large number of pilot studies.

为进一步提高我国气吸式播种机性能，本文对气吸式精量播种机进行了大量的试验研究。

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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.

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。

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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.

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。

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