进而分析了成穴器结构参数对打穴铲在土壤上所形成穴孔长度和穴孔宽度的影响。
The working principle and the influences of construction parameters of the soil opener on the length and the width of soil hole formed by spade on the soil surface were analyzed.
成穴器的性能试验表明，本文提出的成穴器性能良好，解决了现有成穴器普遍存在的一些问题。
The performance tests of ADU have showed that performance of ADU presented in this paper is satisfactory and present problems of such unit are solved.
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.
本文主要从两个方面对覆膜穴播机具进行分析：一是鸭嘴式成穴器的成穴机理；二是外槽轮式排种器的分析。
The test mostly analyse the film mulching hill-drop planter from two aspects: One is mechanism of duck-mouth type punching-opener, One is analyse of metering device .
本文主要从两个方面对覆膜穴播机具进行分析：一是鸭嘴式成穴器的成穴机理；二是外槽轮式排种器的分析。
The test mostly analyse the film mulching hill-drop planter from two aspects: One is mechanism of duck-mouth type punching-opener, One is analyse of metering device .
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