根据国内外玉米育种现状和玉米生产实践，对优良杂交种及生产主推杂交种亲本的遗传基础进行综合分析：兰卡斯特、瑞德黄马牙、旅大红骨子、塘四平头、先锋系列等几大系统的杂交种，在玉米育种及生产中占有绝对优势。显见，玉米杂交种的遗传基础是很狭窄的。本文提出几种拓宽玉米种质遗传基础的途径，以供玉米育种工作及生产应用参考。 According to the status quo of maize breeding at home and abroad and maize production practice, the genetic basis of elite crossbreeds and parents of hybrid progeny were analyzed synthetically: Lancaster, Rehmar Huangmaya, Ludao Hongguang, Tongsipingping, Pioneer series and so on Several systems of hybrids, maize breeding and production occupy an absolute advantage. Obviously, the genetic basis of maize hybrids is very narrow. This paper presents several ways to broaden the genetic basis of maize germplasm for maize breeding work and production and application of reference.