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当前华北地区玉米生产的发展趋势,由60年代以前的春播玉米为主,逐渐转为套种和夏播为主的生产方式,相应对夏播玉米的生育规律和丰产技术的研究就成为当前的重要课题。为此我们研究了京早七号的生育规律,同时结合不同时期施营养元素和剪叶措施观察各器官的效应,从而为栽培管理提供理论依据。
At present, the development trend of maize production in North China is mainly from spring sowing before the 1960s and gradually shifting to the intercropping and summer sowing modes of production. Therefore, the research on the law of maternal fertility and high yield of summer sowing is the most important Question. Therefore, we studied the fertility rule of Jingzao 7 and observed the effects of various organs combined with nutrition elements and leaf-cutting measures in different periods to provide a theoretical basis for cultivation management.