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[目的]对早熟、高产、优质玉米品种京科25进行评价。[方法]通过文献数据阐述了京科25的农艺特征,根据北京市和国家玉米品种区试和生产试验结果,叙述了京科25在历年各级试验中的产量表现,介绍了该品种的品质、抗逆性、耐密性和适种区域。[结果]京科25年际间稳产性好,增产潜力大,夏播具有12 000.0 kg/hm2以上的高产潜力。在北京市2年区试中该品种平均产量8 080.5 kg/hm2,比对照唐抗5号增产12.6%,国家2年区试平均产量8 154.0 kg/hm2,比对照唐抗5号增产20.5%。该品种抗丝黑穗病、矮花叶病、大小斑病和玉米螟等,抗旱性强,籽粒容重774 g/L,粗蛋白10.42%,达到国家1级玉米标准。[结论]京科25在天津、河北、河南等省市具有较好的推广应用前景。
[Objective] The research aimed to evaluate the early maturity, high yield and quality corn variety Jingke 25. [Method] Based on the literature data, the agronomic characteristics of Jingke 25 were described. According to the results of regional and trial production of maize varieties in Beijing and other countries, the yield performance of Jingke 25 at all levels of the past years was described. The quality of the cultivar , Resistance, tightness and the right kind of area. [Result] Jingke had good stability and yield potential in the 25 year period. Summer sowing had the high yield potential of more than 12 000.0 kg / hm2. The average yield of 880.5 kg / hm2 in Beijing 2-year trial was 1280.0 kg / hm2, which was 12.6% higher than that of Tangkang-5 and 8 154.0 kg / hm2 in 2-year national trial. . The varieties resistant to head smut, dwarf mosaic disease, size spot and corn borer, etc., drought resistance, grain weight 774 g / L, crude protein 10.42%, reaching the national level 1 corn standards. [Conclusions] Jingke 25 has good prospects of popularization and application in such provinces and cities as Tianjin, Hebei and Henan.