玉米为陕西关中地区的第二个重要粮食作物,栽培面积仅次于小麦。特别在渭河流域灌溉区,它是广大人民的主要食粮,又是与冬作物进行轮作的主要夏季作物,因此对增加粮食生产和扩大复种面积有重大意义。近年来,大规模种植「辽东白」(俗名白大片)和在一些地方栽培「野鸡红」与「红心白马牙」等品种,对关中玉米生产起了显著作用。但这些品种尚存在增产潜能不够高或生育期较长的缺点,还不能很好地满足农业生产上对玉米品种所提出 Corn is the second most important grain crop in the Guanzhong area of ​​Shaanxi Province, with cultivated area second only to wheat. Especially in the Weihe River Basin irrigation area, which is the main food for the majority of people and the major summer crop for rotation with winter crops, it is of great significance for increasing grain production and expanding the area for multiple cropping. In recent years, large-scale cultivation of “Liaodong White” (common name white blockbuster) and in some places cultivated varieties such as “Pheasant Red” and “Red Heart White Horse Tooth” have played a significant role in Guanzhong’s maize production. However, these cultivars still have the shortcoming of insufficient growth potentiality or long growth period, and they are still not able to meet the requirements of maize varieties in agricultural production