甘蔗新品种桂糖30种植密度试验  

Planting density test on new variety Guitang 30

作　　者：王伦旺 李廷化 黎焕光 黄海荣 李翔 经艳 谭芳 唐仕云 黄家雍 

机构地区：[1]中国农科院甘蔗研究中心/广西农科院甘蔗研究所/广西甘蔗遗传改良重点实验室/农业部广西甘蔗生物技术与遗传改良重点实验室,广西南宁530007 [2]广西农垦国有金光农场,广西南宁530042

出　　处：《广东农业科学》2012年第19期12-14,18,共4页Guangdong Agricultural Sciences

基　　金：国家农业科技成果转化资金项目(2010GB2E100356);广西甘蔗研究所基本科研业务专项(G2010004);国家科技支撑计划项目(2007BAD30B02);国家现代农业产业技术体系(甘蔗)广西创新团队专项资金(nycytxgxcxtd-02);广西自然科学基金(桂科基0778006-2)

摘　　要：为了解高产高糖甘蔗新品种桂糖30在广西蔗区的适宜种植密度,为其推广应用提供配套栽培技术,于2011年分别在广西4个不同类型蔗区对该品种进行了5种不同种植密度水平比较试验,结果表明,桂糖30随着种植密度从7.5万芽/hm2增加到13.5万芽/hm2,单位面积有效茎数、蔗茎产量和蔗糖含量有提高的趋势,分蘖率和茎径则有下降趋势;其中种植密度是10.5万～13.5万芽/hm2,单位面积蔗茎产量和蔗糖含量分别在103.61～109.90 t/hm2和15.50～16.44 t/hm2之间变化,但差异不显著。种植密度为12万芽/hm2时的单位面积蔗茎产量和蔗糖含量最高,分别达到109.90、16.44 t/hm2。桂糖30在广西的适宜种植密度是10.5万～13.5万芽/hm2,最适种植密度为12万芽/hm2,但不同类型蔗区桂糖30对不同种植密度的反应存在差异,在实际生产中要因地制宜。In order to know about the optimum of planting density of high sugar and cane yield of sugarcane variety Guitang （GT） 30, and provide a cultivation technique for promotion in Guangxi. Five different planting density levels of GT 30 planted were conducted in 4 different sugarcane plantation regions in 2011. The results were showed that millable canes, can and sugar yield was increase by planting densities were from 75 000 to 135 000 buds/hm2, but tillering rate and stem diameter were decrease. The planting density was on range of 105 000 to 135 000 buds/hm2 getting the cane and sugar yield of 103.61-109.90 t/hm2 and 15.50-16.44 t/hm2, respectively, was not difference significant. Planting density of 120 000 buds/hm2 was got the highest of cane and sugar yield by109.90 t/hm2 and 16.44 t/hm2, respectively. Conclusion： sugarcane GT 30 was suitable for planting density from 105 000 buds/hm2 to 135 000 buds/hm2, with the optimum of 120 000 buds/hm2. But different types of sugarcane plantations were differences by planting density, it should be considered in the practical production to local conditions.

关 键 词：甘蔗 桂糖30 种植密度 栽培技术 

分 类 号：S566.1[农业科学—作物学]