甘蔗新品种桂辐98-296不同种植密度的表现  

Performance of New Sugarcane Variety Guifu98-296 on Different Planting Density

作　　者：梁阗[1] 李毅杰[1] 游建华[1] 吴凯朝[1] 刘红坚[1] 罗亚伟[1] 

机构地区：[1]广西农业科学院甘蔗研究所/农业部广西甘蔗生物技术与遗传改良重点实验室/广西甘蔗遗传改良重点实验室,广西南宁530007

出　　处：《中国糖料》2016年第2期23-25,28,共4页Sugar Crops of China

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)资助项目

摘　　要：为了解高产高糖甘蔗新品种桂辐98-296在广西蔗区的适宜种植密度,为其推广应用提供合理密植依据。在广西隆安县、合山市、柳江县、融水县、环江县5个不同蔗区进行67500、82500、97500、112500芽/hm^2四种不同种植密度水平比较试验。结果表明,在67500~112500芽/hm^2范围内,不影响桂辐98-296的出苗率、分蘖率和蔗糖分,蔗株茎径与种植密度呈负相关,单位面积有效茎数与种植密度呈正相关;97500芽/hm^2处理平均蔗茎产量最高为97.35 t/hm^2,分别比82500、112500、67500芽/hm^2处理增加1.42、2.12、6.02 t/hm^2;桂辐98-296最适的种植密度为82500~97500芽/hm^2,但不同类型蔗区对种植密度反应存在差异,生产上应因地制宜。In order to know about the optimum planting density of high sugar content and cane yield of sugarcane variety Guifu98-296, and provide rational close planting basis for promotion in Guangxi sugarcane region, the experiment of four different planting density levels which contained 67500 buds/ha, 82500 buds/ha,97500 buds/ha and 112500 buds/ha were conducted in 5 different sugarcane plantation regions which including Long＇an County, Heshan City, Liujiang County, Rongshui County and Huanjiang Couty. The results showed that,when the planting density was on range of 67500 buds/ha to112500 buds/ha, there was no effect on emergence rate, tillering rate and sucrose content of Guifu98-296. There are negative correlation between sugarcane stem diameter and planting density, meanwhile positive correlation between millable canes and planting density. The cane yield of treatment 97500 buds/ha was the highest（97.35 t/ha）, increased by 1.42, 2.12 and 6.02 t/ha, in comparison with other treatment of 82500 buds/ha, 97500 buds/ha and 112500 buds/ha respectively. The optimum planting density of sugarcane Guifu98-296 was from 82500 buds/ha to 97500 buds/ha, but suitable planting density was different in different sugarcane planting area, it should be considered in the practical production to local conditions.

关 键 词：甘蔗 桂辐98-296 种植密度 产量 

分 类 号：S566.1[农业科学—作物学]