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根据玉米需肥规律、土壤肥力、肥料类型以及施肥时的自然条件和栽培措施,确定适宜的施肥数量、次数、时间和方法,最大限度地提高化肥利用率。根据生产实践,玉米高产施肥分为基肥、种肥、追肥和根外追肥4种。1施足基肥基肥系指播种前施用的肥料,也称底肥,以有机肥料为主,化肥为辅。基肥的主要作用是培肥地力,疏松土壤,缓慢释放养分供给玉米幼苗期和生育后期生长发育的需要。
According to the law of fertilizer requirement of maize, soil fertility, types of fertilizers and natural conditions and cultivation measures during fertilization, the appropriate amount, times, times and methods of fertilization were determined to maximize the utilization of chemical fertilizers. According to the production practice, corn high-yield fertilizer is divided into basal fertilizer, fertilizer, top dressing and top dressing 4 kinds. 1 Shizujifei base fertilizer refers to the application of fertilizer before sowing, also known as base fertilizer, organic fertilizer, supplemented by chemical fertilizers. The main role of basal fertilizer is to fertilize the soil, loose soil, slow release of nutrients to provide corn seedling growth and development needs.