玉米新品种郧单25的选育、综合分析及高产栽培技术  

Breeding,comprehensive analysis and high-yield cultivation techniques of new maize variety Yundan 25

作　　者：余长平[1] 周华平[1] 叶青松[1] 吴承国[1] 肖能武[1] 秦光明[1] 李永学[1] 王致云 陈强 刘永忠[2] YU Chang-ping;ZHOU Hua-ping;YE Qing-song;WU Cheng-guo;XIAO Neng-wu;QIN Guang-ming;LI Yong-xue;WANG Zhi-yun;CHEN Qiang;LIU Yong-zhong(Shiyan Academy of Agricultural sciences,Shiyan,442000,Hubei,China;College of Plant Science and Technology,Huazhong Agricultural University,Wuhan430070,China)

机构地区：[1]湖北省十堰市农业科学院,湖北十堰442000 [2]华中农业大学植物科学技术学院,武汉430070

出　　处：《湖北农业科学》2023年第1期6-11,共6页Hubei Agricultural Sciences

摘　　要：简要介绍了玉米(Zea mays L.)新品种郧单25的选育过程及其特征特性。依据郧单25参加湖北省2019—2020年玉米山区组品种区域试验和生产试验的表现,通过分析产量平均值、产量变异系数、丰产性效应值、高稳系数、适应性参数、产量与环境指数的回归系数等指标,对其在湖北省山区的丰产性、稳产性和适应性进行分析。结果表明,郧单25丰产性突出、稳产性好、适应性广,是适合湖北省山区及类似生态区推广种植的玉米新品种。以郧单25为试验材料,采用二因素裂区设计,设置主处理施肥量(A)与副处理种植密度(B)研究了不同施肥水平和种植密度对其产量及主要农艺性状的影响,结果表明,郧单25的最佳栽培模式为密度5.50万株/hm^(2)、750.0 kg/hm^(2)复合肥作底肥、337.5 kg/hm^(2)尿素作追肥(苗肥∶穗=1∶2),平均单产最高,达15670 kg/hm^(2)。The breeding process and characteristics of a new maize(Zea mays L.)variety Yundan 25 were briefly introduced.Based on the results of the regional trial and production trial of maize varieties from 2019 to 2020 in Hubei Province,the performance of productivity,stability and adaptability of Yundan 25 in the mountain area of Hubei Province were analyzed by testing the average yield,yield variation coefficient,high yield effect value,high stability coefficient,adaptability parameter,and regression coefficient of yield and environmental index.The results showed that Yundan 25 was a new maize variety with a higher yield,stronger stability,wider adaptability,and suitable for spreading planting in mountainous areas of Hubei Province and other corresponding ecological areas.In addition,the effects of different fertilizer amount(A)and planting densities(B)on yield and main agronomic traits of maize variety Yundan 25 were studied by using two-factor split plot design.The results showed that the best cultivation mode of Yundan 25 was density of 55000 plants/hm^(2),750.0 kg/hm^(2)compound fertilizer as base fertilizer,337.5 kg/hm^(2)urea as topdressing(seedling fertilizer∶ear fertilizer=1∶2),and the average yield was the highest,reaching 15670 kg/hm^(2).

关 键 词：玉米(Zea mays L.) 郧单25 选育 综合分析 栽培技术 

分 类 号：S513[农业科学—作物学]