一、紧凑型玉米在全国推广现状 紧凑型玉米杂交种推广及其优质高产配套技术的研究应用,获得了有关专家鉴定和各类奖励。4年来全国推广紧凑型玉米1.4173亿亩,比1990年6683万亩增加0.749亿亩,主要推广掖单号系列品种,特别是掖单13号在许多省份增产显著,据全 First, the compact corn in the promotion of the status quo The promotion of compact hybrid corn and its high-quality high-yielding research and application of technology, access to relevant experts and all kinds of awards. In the past four years, 1.4173 billion mu of compact corn was popularized across the country, an increase of 74.9 million mu more than 66.83 million mu in 1990. The main products of the Yedan series are notably popularized. In particular, Yedang No.13 has produced remarkable yields in many provinces,