【摘要】 介绍了复式型孔的结构、基本原理和控制排种量的方式。通过定性试验和性能试验，论证了复式型孔能够用于分蘖作物（小麦）的精量播种。还在排种量稳定性和播量的精确、可控、定量方面，将内侧充种垂直圆盘排种器与外槽轮式排种器作了比较。更多还原

【Abstract】 The paper introduced the structure, basic principles and control patten of seed rate of the double hole. Through the qualitative test and performance test, it proved that the double hole can be used in precise seeding for tillering crop (such as wheat). It also compared the vertical plate feed of seed cell filling on inside precise seedmeter with fluted feed for steadibility of seed rate and accuracy, fixedness and controllability of seed rate per hectare.更多还原