南方农业学报2012，Vol.43Issue(5)：634-636,3.DOI:10.3969/j:issn.2095-1191.2012.05.634
不同磷肥用量对桂中蔗区甘蔗生长性状与产量的影响
Impacts of different dosages of phosphorous fertilizer on agronomic traits and yield in sugarcane in central Guangxi
摘要
Abstract
[Objective]Effects of phosphorous fertilization on sugarcane production were investigated in central Cuangxi to rationalize the application of phosphorous fertilizer in sugarcane fields. [Method]Field experiments were conducted using four different levels of phosphorous fertilizer treatments, viz., Po (0 kg/ha), P1 (59.925 kg/ha), P2(119.850 kg/ha), P3 (179.775 kg/ha) to observe their effects on sugarcane growth characteristics in Xingbin District of Guangxi. In addition to this, their agronomic efficiency was also calculated. [Result]At tillering, elongation and maturity stages, the application of phosphorous fertilizer significantly boosted the growth vigor of sugarcane. On an average, effective stem number,stem diameter and yield of sugarcane were increased by 6.48, 6.67 and 8.70%, respectively, under different fertilization treatment compared to Po (no fertilizer). Agronomic efficiency of phosphorus fertilizer in treatment P1, P2, P3 was 14.51, 10.82 and 8.31%, respectively. Once exceeding 119.850 kg/ha (P2O5), single stalk weight and agronomic efficiency of phosphorus fertilizer declined with increasing fertilizer dose. [Conclusion]Considering sugarcane yield and effective use of fertilizer, the viable dose of phosphorus fertilizer should be 119.850 kg/ha (P2O5) for central Guangxi areas.关键词
甘蔗/磷肥/施用量/生长性状/产量/农学效率Key words
sugarcane/ phosphorus fertilizer/ growth trait/ yield/ agronomic efficiency分类
农业科技引用本文复制引用
刘永贤,曾维宾,熊柳梅,蓝桃菊,韦正宝..不同磷肥用量对桂中蔗区甘蔗生长性状与产量的影响[J].南方农业学报,2012,43(5):634-636,3.基金项目
国家自然科学基金重点项目(U1033004-06) （U1033004-06）
广西青年科学基金项目(2011GXNSFB018026) （2011GXNSFB018026）
