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玉米是我国第二大粮食作物,常年种植面积约0.24亿hm2,占作物播种面积的21%左右。建国以来,特别是20世纪80年代以来,随着科技进步和物质投入增加,我国玉米生产迅速发展,在本国粮食经济和世界谷物生产中的地位不断提高。为了满足这一现状的需求,玉米育种者不断的进行南繁加代,加速育种进程,育出了不少新品种,并同时为避免品种单一导致病虫害给玉米生产造成的威胁,各育种单位除在不断培育自己的新品种外,还从国内兄弟单位相继进行了引种。
Corn is the second largest food crop in China with annual planting area of about 24 million hm2, accounting for about 21% of the sown area of crops. Since the founding of the People’s Republic of China, especially since the 1980s, with the advancement of science and technology and the increase of material inputs, the corn production in our country has been rapidly developed, and its status in the domestic grain economy and the world cereal production has been continuously improved. In order to meet the needs of this situation, the breeders of corn continue to carry on the generation of Nanfan to speed up the process of breeding and breed many new varieties. At the same time, in order to avoid the threat caused by pests and diseases to corn production, Continue to cultivate their own new varieties, but also from the domestic units have been introduced brothers.