20世纪80年代以来,由于厄尔尼诺现象在全球频频发生,使玉米良种的繁育受到严重影响,限制了其产量、品质和经济效益的提高。其中厄尔尼诺现象在胶东地区的危害主要表现为:高温、干旱、涝灾和光照不足。因此,怎样避开或减轻这种现象的危害,使玉米制种中获得高产优质,是一个值得研究的重要课题。近十几年来,即墨市在生产实践中,不 Since the 1980s, the frequent occurrence of El Niño in the world has severely affected the breeding of elite varieties of corn, limiting its yield, quality and economic benefits. Among them, the harm of El Nino in the Jiaodong area mainly includes high temperature, drought, waterlogging and insufficient light. Therefore, how to avoid or lessen the harm of this phenomenon and make the yield and quality of seed production in maize is an important topic that deserves to be studied. In recent decades, Jimo in production practice, no