吉林省洮南市粮食作物以玉米为主,每年大约有50%耕地种植的是玉米,面积在100万亩以上。当前市场流通品种较多,为了筛选出适合本市种植的高产优质新品种,洮南市农业技术推广中心于2004年对市场上宣传较好的11个品种进行了产量对比试验。1材料与方法1郾1试验材料供试品种均由洮南 Taonan City, Jilin Province, corn-based food crops each year about 50% of cultivated land is corn, an area of ​​100 mu or more. In the current market, there are many varieties in circulation, and in order to screen out high-yielding and high-quality new varieties suitable for planting in the city, Taonan Agricultural Technology Extension Center carried out comparative experiments on the yield of 11 varieties with better publicity on the market in 2004. 1 Materials and methods 1 郾 1 test materials for the test varieties are Taonan