追施尿素对甘蔗新品种桂辐98-296农艺性状及产量的影响  

Effects of Urea Fertilizer Rates on Agronomic Traits and Yield of New Sugarcane Variety Guifu 98-296

作　　者：刘红坚[1] 游建华[1] 李松[1] 刘俊仙[1] 卢曼曼[1] 淡明[1] 刘丽敏[1] 余坤兴[1] 

机构地区：[1]广西农业科学院甘蔗研究所,广西南宁530007

出　　处：《湖南农业科学》2015年第12期36-37,41,共3页Hunan Agricultural Sciences

基　　金：国家农业科技成果转化资金(2012GB2E100358);广西农业科技成果转化资金(桂科转1222017-16)

摘　　要：试验研究了甘蔗新品种桂辐98-296在拔节期追施不同浓度的尿素对甘蔗农艺性状和产量的影响。结果表明:尿素施用量不同,桂辐98-296分蘖率有一些差别,但差异不显著;桂辐98-296株高、茎径和有效茎的值均随尿素施用量增加而呈先增加后降低的趋势,株高、茎径值以150 kg/hm^2时为最高,有效茎以300 kg/hm^2时为最多;桂辐98-296的产量和含糖量也随尿素施用量增加而呈先增加后降低的趋势,以300kg/hm2时为最高,但是处理间差异均不显著。因此,在生产上只需按常规施肥已经足够,不需费肥、费工追施尿素,以免增加生产成本,污染环境。This study was to determine how different urea fertilizer concentrations at elongation stage would affect agronomic traits and yield of new sugarcane variety Guifu 98-296. The results showed that the tiller rate of Guifu 98-296 was different because of urea fertilizer rates, but the difference was not remarkable; the plant height, stem diameter and effective stem per hm^2 respectively increased first and then decreased as urea fertilizer application rates rose, the plant height and stem diameter reached the maximum at urea fertilizer rate of 150 kg/hm^2, and the effective stem number reached the maximum at the rate of 300 kg/hm^2; and the stem yield and sugar content respectively increased first and then decreased as urea fertilizer application rates rose, and reached the maximum at the rate of 300 kg/hm^2, but the difference was not significant. So in production, the conventional fertilizer application rate would be enough without needing the additional application of more urea at the expense of more work and more fertilizer so as not to increase production costs and environmental pollution.

关 键 词：甘蔗 桂辐98-296 尿素追肥 农艺性状 产量 

分 类 号：S566.1[农业科学—作物学]