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本文阐述了种植在低纬度、高海拔地区的热带和亚热带高原玉米种质的特点及利用价值，并对如何利用这类资源来改良温带玉米的抗病性，拓宽遗传基础进行了经验性讨论。
This paper describes the characteristics and value of maize germplasm grown in tropical and subtropical highlands of China at low latitudes and high altitudes and discusses empirically how to use such resources to improve the disease resistance and broaden the genetic basis of temperate maize.