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以张玉一号、张玉二号和张玉四号等为代表的张玉系列春玉米杂交新品种，是由河北省张家口市玉米研究所育成的。引入内蒙古赤峰市以来，表现出了较强的适应性和高产优质特性，与现在我市主栽的其它春玉米品种相比，植株高度低50～100厘米，根系发达，茎秆粗壮，抗倒伏能力增强；
The Zhangyu No.1, Zhangyu II and Zhangyu No.4 are the new varieties of spring maize hybrids that were bred from the Zhangjiakou Maize Research Institute in Hebei Province. Since the introduction of Chifeng City in Inner Mongolia, it has shown a strong adaptability and high yield and quality characteristics. Compared with other spring maize varieties mainly planted in our city, the plant height is 50-100 cm, the root system is developed, the stalk is sturdy, Ability to enhance