摘要
探讨桂辐98-296种茎直接补种广西主栽品种新台糖22号宿根蔗的最适下种时段和植蔗沟深度,为生产推广应用提供理论依据。采用桂辐98-296种茎在新台糖22宿根蔗3个下种时段(芽萌动前、蔗芽萌动和蔗苗长出2~3张蔗叶),进行3种不同深度植蔗沟(沟底与宿根蔗末端基部持平、沟底与宿根蔗低位芽持平和沟底高于宿根蔗低位芽)补种,分别调查桂辐98-296蔗株和新台糖22号宿根蔗的产量性状、蔗茎产量及蔗糖品质表现。补种的桂辐98-296蔗茎产量为16.71~18.30 t/hm2,处理间产量差异不显著,各处理的蔗糖分为13.62%~14.23%、变幅不大;各处理新台糖22号宿根蔗的甘蔗产量为54.65~56.19 t/hm2,处理间产量差异不明显,蔗糖分为13.72%~14.13%、相差较少。在新台糖22号宿根蔗芽萌动前至蔗苗长出2~3张蔗叶期间,直接补种桂辐98-296种茎,可以增加单位面积有效茎数,增加甘蔗产量;补种种茎摆种的植沟深度与宿根蔗末端基部持平为宜。
Seed cane of sugarcane variety Guifu98-296 was planted directly in the ratoon of sugarcane variety ROC 22 to investigate their optimum planting time and depth to provide scientific basis for sugarcane production and extension. The seed cane was planted at three different time, i.e., bud pre-emergence, bud emergence or 2-3 leaves based seedlings of the ratoon of sugarcane ROC22, and three different depths, i.e., the bottom of planting ditch parallel to the base of the ratoon, to the lower buds of the ratoon, or higher than the low buds of the ratoon in the experiment. The yield traits, crop yield and sucrose quality of the sugarcane Guifu98-296 and the sugarcane ROC22 ratoon were determined and analyzed. The crop yield of Guifu98-286 p ranged from 16.71 t/ha to 18.30 t/ha, not significantly different among all the treatments, and the cane sucrose content was at the range of 13.62% ~14.23%,without much difference among the treatments. The ROC22 ratoon had a crop yield ranging from 54.05 to 56.19 t/ha, with no obvious different among all the treatments, and its sucrose content wasbetwe en13.72% and 14.13% not much different among all the treatments. Planting of the seed cane of Guifu98-296 in ROC22 ratoon at the stage from the bud pre-emergence to the seedlings with 2-3 leaves could increase the effective number of stalks per unit area and the cane yield. And the best planting depth was that the seed cane was placed parallel to the low end of the stump of the ratoon.
出处
《热带农业科学》
2017年第5期1-4,23,共5页
Chinese Journal of Tropical Agriculture
基金
广西农业重点科技计划项目"桂辐98-296种茎直接补种延长主栽品种宿根的研究"(No.201524)
广西蔗糖产业协同创新团队项目
