高产·优质·紧凑型玉米杂交种浚单22述评

Review of A High Yield and Good Quality Compact Corn Hybrid-Jundan 22

[目的]为浚单22的推广种植提供理论依据。[方法]通过比较浚单22和对照玉米品种的生长和品质指标,探讨了浚单22的生产潜力和推广价值。[结果]浚单22在河南省和黄淮海地区的夏播生育期分别为103和97 d,千粒重为340-360 g,出籽率为90%。该品种在1998和1999年的浚县品比试验中的平均产量分别为8 760.00和10 170.00 kg/hm^2。该品种在2000年河南省玉米预备试验中的平均产量为8 365.50 kg/hm^2,在2003年河南省玉米生产试验中的平均产量为7 195.50 kg/hm^2,在2003年河北省高密组夏玉米区域试验中的平均产量为9 046.95 kg/hm^2。该品种的淀粉含量分别比豫玉18、邢抗2号高3.78%和3.92%。该品种的综合抗病（虫）性较好,在同等肥力水平下,其适宜种植密度为5.25万-6.75万株/hm^2。[结论]浚单22品质优良,适宜在黄淮海平原推广种植。

[Objective]The purpose was to supply theoretical basis for the popularization and cultivation of Jundan 22.[Method]Through comparing the growth and quality indexes of Jundan 22 and control corn varieties,the production potential and popularization value of Jundan 22 were discussed.[Result]The growth periods,1 000-seed weight and seed-production rate of Jundan 22 sowed in summer in Henan Province and Huanghuaihai area were 103 and 97 d,340-360 g and 90% resp.In the variety-comparison test performed in Junxian county in 1998 and 1999,its mean yields were 8 760.00 and 10 170.00 kg/hm^2 resp.In the pre-corn test performed in Henan Province in 2000,its mean yield was 8 365.50 kg/hm^2.In the corn production test performed in Henan Province in 2003,its mean yield was 7 195.50 kg/hm^2.In the regional test of high-density summer corn,which was performed in Hebei Province in 2003,its mean yield was 9 046.95 kg/hm^2.Its starch content was 3.78% and 3.92% higher than Yuyu18 and Xingkang 2 resp.Its comprehensive disease and insect resistance was better.Under the same fertility level,its suitable cultivation density was 5.25×10^4-6.75×10^4 plants/hm^2.[Conclusion]Jundan 22 had good quality and it was suitable for popularization and cultivation in Huanghuaihai Plain.