玉米新选品种产量比较及其主要特征

Field comparison and main characteristics of new maize hybrids

以延边大学农学院玉米组选育的7个玉米新品种为试验材料进行的产量比较分析结果表明,在2002年的产比中增产的品种有5个,平均比对照增产0.3％～15.0％.其中表现突出的新品种有延农5和延农15,其产量分别为9 447.6kg/hm^2和8 561.1kg/hm^2,分别比对照品种增产15.0％和2.5％.这2个品种在2000～2002年3年的试验中平均比对照增产19.4％和10.6％,增产幅度比较大,且在不同年份的表现比较稳定.

Comparative analysis of the yields of seven new maize hybrids was conducted. The results showed that five of them gained higher yield than the check Sidan 9 with the increasing rate of 0.3% -15.1% in average. Among the hybrids examined, the two hybrids Yannong 5 and Yannong 15 were best. The yields of Yannong 5 and Yannong 15 were 9 447. 6 kg/hm2 and 8 561.1 kg/hm2 with the increasing rate of 15.0% and 2.5% respectively. The average increasing rate of the two hybrids were great and stable which were 19.4% and 10.6% respectively from 2000 to 2002.