南方农业学报2012，Vol.43Issue(8)：1145-1148,4.DOI:10.3969/j:issn.2095-1191.2012.08.1145
施肥量与种植密度对桂糖29号产量及构成因素的影响
Effects of fertilizer rate and planting density on yield and its components of GT29
摘要
Abstract
[Objective]The present research was conducted to determine the optimal fertilizer rate and planting density of a new sugarcane variety GT29 to provide references for extending this variety in sugarcane production. [Method] Split-plot experiment with two factors (fertilizer rate and planting density) was designed to investigate sugarcane agronomic traits,such as total number of seedlings,number of millable stalks,plant height,stalk diameter,sucrose content,yield,at etc.,for analyzing the effects of 3 fertilizer rates (2250,3750 and 5250 kg/ha) and 4 planting densities (7.5×104,9.0×l04,10.5×l04 and 12×104 buds/ha) on sugarcane yield and its components. [Result]Sugarcane yield reached the highest (95.34 t/ha) at the fertilizer rate of 2250 kg/ha and planting density of 90,000 buds/ha; plant height was the tallest (209 cm) at the fertilizer rate of 3750 kg/ha and plant density of 75000 buds/ha,which was significantly higher than that at the fertilizer rate of 5250 kg/ha and plant density of 105000 buds/ha (193 cm). No significant difference in yield,tillering rate,stalk diameter,and sucrose content was found among different treatments,while sugarcane yield was positively correlated with number of millable stalks per unit area. [Conclusion]For GT29,the optimum fertilizer rate was N 260 kg/ha,P2O5 130 kg/ha,K2O 150 kg/ha (N:P2O5:K2O=12:6:7),and the optimum planting density was 90000 buds/ha.关键词
桂糖29号/肥料/密度/产量Key words
GT29/fertilizer/density/yield分类
农业科技引用本文复制引用
段维兴,方锋学,刘许辉,杨海霞,张荣华,高轶静,王泽平,罗霆,宋焕忠,张革民..施肥量与种植密度对桂糖29号产量及构成因素的影响[J].南方农业学报,2012,43(8):1145-1148,4.基金项目
国家农业科技成果转化基金项目(2011GB2E100014) （2011GB2E100014）
现代农业产业技术体系建设专项资金项目(CARS-20-1-3) （CARS-20-1-3）
广西农业科技成果转化基金项目(SQ2011ECE100043) （SQ2011ECE100043）
广西自然科学基金项目(2011GXNSFF018002,2010GXNSFD013034,2012GXNSFBA053036) （2011GXNSFF018002,2010GXNSFD013034,2012GXNSFBA053036）
广西农业科学院基本科研业务专项项目(桂农科2011YT01、2011YT04、2012YM 14) （桂农科2011YT01、2011YT04、2012YM 14）
广西农业科学院科技发展基金项目(2011JM06) （2011JM06）
