早熟·高产·优质玉米品种京科25述评

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/hm^2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/hm^2,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/hm^2,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。

Review of A Early, High Yield and Good Quality Maize Variety-Jingke 25

Objective] The study aimed to introduce the early maize variety Jingke 25 with high yield and good quality.Method] Based on the literature data,the agronomic traits of Jingke 25 was expatiated,its yield performance in the tests at all level in past years was depicted according to the regional tests and productive tests of maize varieties at Beijing City and nation level and its quality,stress resistance,density resistance and the suitable planting region were introduced.Result] Jingke 25 had good stable ...