在盆栽条件下研究了壤土土壤最优施肥方案下不同施氮方法对甘蔗一些生理性状乃至产量和糖分的影响 ,拟在探讨壤土甘蔗生产的适宜施氮时期和施氮次数 ,为甘蔗生产提供合理的施氮方法及理论依据。结果表明 ,前期重施氮肥 ,施氮次数减少至 2次或 1次 ,各生长时期的生理性状都有利于蔗茎产量的形成和蔗茎蔗糖分的积累 ,对提高蔗茎产量、蔗茎蔗糖分都有好处 Under potted condition, the effects of different nitrogen application methods on some physiological characters and yield and sugar content of sugarcane under optimized fertilization program of loamy soils were studied. The suitable nitrogen application periods and nitrogen application times for sugarcane loam production were proposed to provide reasonable sugarcane production Nitrogen application method and theoretical basis. The results showed that the amount of nitrogen fertilizer and nitrogen fertilizer decreased to 2 times or 1 times at the early stage, and the physiological characteristics of each growth period were conducive to the formation of cane yield and sucrose accumulation in sugarcane cane, Points are good