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为了解不同糖能兼用甘蔗品种(系)在不同播种密度条件下的生产性能表现,为今后进行能源甘蔗品种推广应用提供参考。对来自国内外的5个糖能兼用甘蔗品种(系)在5种不同播种密度下进行1年新植1年宿根种性比较试验。结果表明,不同播种密度水平之间的平均生物产量、蔗茎产量、蔗糖产量和总可发酵糖产量差异均不显著;B1、B8、GT26、GT97/69、GT22等品种(系)之间在生物产量、蔗茎产量、蔗糖产量、总可发酵糖产量和株高、茎径、有效茎数等产量构成因子方面的差异达到极显著水平;GT97/69、B1对播种密度反应比较敏感,其最适宜的播种量分别是每公顷12万芽和13.5万芽,其他品种反应则不敏感。甘蔗的产量主要由品种(系)的种性决定,不同品种对不同的播种密度反应不同,甘蔗新品种在推广应用之前应在不同栽培管理水平和环境条件下进行播种密度试验,确定比较合理的单位面积播种量。
In order to understand the performance of different sugarcane varieties with different sowing densities under different sowing densities, this paper provides a reference for the popularization and application of energy sugarcane varieties in the future. A total of five sugarcane sugarcane varieties (lines) from China and abroad were compared for one year with one year planted in five planting densities. The results showed that there was no significant difference in average biomass, cane yield, sucrose yield and total fermentable sugar yield among different planting densities. Among B1, B8, GT26, GT97 / 69 and GT22 varieties Biomass yield, cane yield, sucrose yield, total fermentable sugar yield and plant height, stem diameter, effective stem number and other yield components were significantly different. GT97 / 69 and B1 were more sensitive to sowing density, The most suitable seeding rates were 120,000 buds per hectare and 135,000 buds respectively, while the other varieties were insensitive to the responses. The yield of sugarcane was mainly determined by the species variety. The different varieties responded differently to different sowing densities. Before the popularization and application of new sugarcane varieties, planting density should be tested under different cultivation and management levels and environmental conditions to determine the more reasonable Sowing rate per unit area.