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【目的】揭示能源甘蔗光合性能及相关指标对生物产量形成的作用机理,为能源甘蔗品种选育与栽培提供参考。【方法】对广西甘蔗研究所近年来自育与引进的13个甘蔗新品种,进行小面积高生物量用作能源生产的品种比较试验。【结果】参试品种按生物量指标进行聚类分析,可分为特高、较高和高产3类,类平均生物总量分别达216699、186634、145416kg/ha。各高产类群的甘蔗叶面积指数(LAI)从7月至11月表现为先升高再降低的趋势。【结论】高产能源甘蔗LAI与生物产量之间存在较高的相关性。在高生物量栽培模式中,提高叶面积指数是提高能源甘蔗生物产量的关键。
【Objective】 The objective of this study was to reveal the mechanism of photosynthesis of sugarcane and its related indicators on the formation of biomass and to provide references for the breeding and cultivation of energy sugarcane varieties. 【Method】 Thirteen new sugar cane varieties introduced and introduced in recent years by Guangxi Sugarcane Research Institute were comparatively tested on varieties with high biomass for energy production. 【Result】 The results showed that the tested cultivars were clustered according to biomass indices and classified into three categories of high, high and high yield. The average biomass of the tested species reached 216699, 186634 and 145416kg / ha, respectively. The leaf area index (LAI) of sugarcane from all high-yielding groups showed a trend of first increasing and then decreasing from July to November. 【Conclusion】 There is a high correlation between LAI and biomass of sugarcane with high yield. In the high-biomass cultivation model, increasing the leaf area index is the key to improving bio-production of energy sugarcane.