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[目的]探讨地下滴灌对几个桂糖新品种生长及产量、质量的影响,以便为新品种的推广应用及高产栽培提供参考。[方法]每个品种种一个小区,各小区都分为滴灌和不滴灌(对照)2个处理,采用对比法设计,不设重复。[结果]滴灌处理平均产量115.91 t/hm2,比对照96.18 t/hm2增产19.73 t/hm2,增长20.5%,差异极显著;品种间产量最高的是GT31,其次为GT34,所有桂糖新品种均高过对照种ROC22。滴灌平均甘蔗蔗糖分为14.68%,比对照14.83%少0.19%(绝对值),差异显著。滴灌处理的经济效益极显著,较对照增长15.2%;品种间滴灌效益增长率最高的是GT31,最低的是ROC22,所有参试桂糖新品种滴灌效益增长率均高过ROC22。[结论]在滴灌条件下,甘蔗产量极显著高于非滴灌的对照,经济效益极显著,而甘蔗蔗糖分则略有下降;几个参试桂糖新品种对水分的敏感性超过对照种ROC22。
[Objective] The research aimed to discuss the effects of underground drip irrigation on the growth, yield and quality of several new guiose varieties in order to provide reference for the popularization and application of new varieties and high yield cultivation. [Method] Each plot was planted with one plot. Each plot was divided into two treatments of drip irrigation and no drip irrigation (control). The method was designed by contrast method, and there was no duplication. [Result] The average yield of drip irrigation was 115.91 t / hm2, 19.73 t / hm2 higher than that of the control 96.18 t / hm2, increased by 20.5%. The highest yield was GT31 and the second was GT34. Higher than the control ROC22. The drip irrigation average sugar cane sugar was 14.68%, 0.19% less than the control 14.83% (absolute value), the difference was significant. The economic benefit of drip irrigation was extremely significant, which increased by 15.2% compared with the control. The highest drip irrigation benefit was GT31 and the lowest was ROC22. The drip irrigation benefit of all the new varieties was higher than that of ROC22. [Conclusion] Under the condition of drip irrigation, the yield of sugarcane was significantly higher than that of non-drip irrigation control, the economic efficiency was extremely significant, while the sugar content of sugarcane dropped slightly. The sensitivity of several new varieties of gui sugar to water was more than that of the control ROC22 .