农单 5号是由中国种子集团公司与河北农业大学联合培育的高产玉米新杂交种 ,临颍县种子公司为河南总代理。 1997年 ,该品种在河北的 5个试验点中 ,最高亩产6 11.3ｋｇ ,比对照冀丰 5 8增产 6 5 .1% ,平均增产 19.3 % ,达显著水平 ,居参试品种首位 ;1998年 ,该品种在河南试种试 No. 5 is a new high-yielding maize hybrid cultivar jointly developed by China National Seed Group Corporation and Hebei Agricultural University. Linying County seed company is Henan distributor. In 1997, among the five pilot sites in Hebei, the highest yield was 6 11.3 kg, which was 61.5% higher than that of the control Jifeng 58, with an average increase of 19.3%, reaching the highest level, ranking first in the varieties tested. Year, the species try test in Henan