| 施肥量与种植密度对桂糖29号产量及构成因素的影响 |
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| 引用本文： | 段维兴,刘许辉,杨海霞,张荣华,高轶静,王泽平,罗霆,宋焕忠,张革民,方锋学.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. |
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| 作者姓名： | 段维兴 刘许辉 杨海霞 张荣华 高轶静 王泽平 罗霆 宋焕忠 张革民 方锋学 |
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| 作者单位： | 广西农业科学院甘蔗研究所/中国农科院甘蔗研究中心/广西甘蔗遗传改良重点实验室,南宁,530007广西大学农学院,南宁,530005 |
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| 基金项目： | 国家农业科技成果转化基金项目(2011GB2E100014);现代农业产业技术体系建设专项资金项目(CARS-20-1-3);广西农业科技成果转化基金项目(SQ2011ECE100043);广西自然科学基金项目(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、2012YM14);广西农业科学院科技发展基金项目(2011JM06) |
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| 摘 要： | 目的]确定甘蔗新品种“桂糖29号”最佳施肥量与种植密度,为生产上推广种植该品种提供依据.方法]采用施肥量与种植密度两因素裂区试验,施肥量为主区,设3个施用复合肥水平,分别为2250、3750、5250 kg/ha,种植密度为副区,设7.5、9.0、10.5、12.0万芽/ha 4个水平,调查各处理甘蔗总苗数、有效茎数、株高、茎径、蔗糖分、产量等性状,分析不同施肥量与种植密度对产量及构成因素的影响.结果]施肥量2250 kg/ha、种植密度9.0万芽/ha处理的产量最高,为95.34 t/ha;施肥量3750 kg/ha、密度7.5万芽/ha处理的株高最高,为209 cm,显著高于施肥量5250 kg/ha、密度10.5万芽/ha处理(193 cm);各处理间产量、分蘖率、茎径、蔗糖分差异均不显著;产量与单位面积内有效茎数呈正相关.结论]桂糖29号适宜施肥量为N 260 kg/ha、P2O5 130 kg/ha、K2O 150 kg/ha(N∶P2O5∶K2O=12∶6∶7),最适种植密度为9.0万芽/ha.
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| 关 键 词： | 桂糖29号 肥料 密度 产量 |
Effects of fertilizer rate and planting density on yield and its components of GT29 |
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| DUAN Wei-xing,LIU Xu-hui,YANG Hai-xia,ZHANG Rong-hua,GAO Yi-jing,WANG Ze-ping,LUO Ting,SONG Huan-zhong,ZHANG Ge-min,FANG Feng-xue.Effects of fertilizer rate and planting density on yield and its components of GT29[J].Journal of Southern Agriculture,2012,43(8):1145-1148. |
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| Authors: | DUAN Wei-xing LIU Xu-hui YANG Hai-xia ZHANG Rong-hua GAO Yi-jing WANG Ze-ping LUO Ting SONG Huan-zhong ZHANG Ge-min FANG Feng-xue |
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| Institution: | DUAN Wei- xing 1 ,LIUXu- hui 2 ,YANGHai- xia 2 ,ZHANGRong- hua 1 ,GAOYi- jing 1 , WANG Ze- ping 1 ,LUOTing 1 ,SONGHuan- zhong 1 ,ZHANGGe- min 1 ,FANGFeng- xue 1 * ( 1 Sugarcane Research Institute,Guangxi Academy of Agricultural Sciences/Sugarcane Research Center,Chinese Academy of Agricultural Sciences/Guangxi Key Laboratory for Sugarcane Genetic Improvement,Nanning 530007,China; 2 Agricultural College,Guangxi University,Nanning 530005,China) |
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| Abstract: | 【Objective】The present research was conducted to determine the optimal fertilizer rate and planting densi- ty 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 (7.5×10 4 , 9.0×10 4 , 10.5×10 4 and 12×10 4 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,P 2 O 5 130 kg/ha,K 2 O 150 kg/ha (N∶P 2 O 5 ∶K 2 O=12∶6∶7), and the optimum planting density was 90000 buds/ha. |
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| Keywords: | GT29 fertilizer density yield |
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