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[目的]探讨在地下滴灌的条件下对几个桂糖新品种生长及产、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)两个处理,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19.73T/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,最低是低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,甘蔗产量极显著地高过非滴灌的对照,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 study 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 a plot. Each plots were divided into two treatments, drip irrigation and no drip irrigation (control), which were designed by contrast method without any duplication. [Result] The average yield of drip irrigation was 115.91 T / hm2, increased 19.73T / hm2 than the control 96.18 T / hm2, increased 20.5%, the difference was extremely significant. The highest yield was GT31, 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 benefits of drip irrigation were significantly higher than that of the control (15.2%). The highest drip irrigation benefit was GT31 and the lowest was ROC22. The drip irrigation benefit of all varieties was higher than that of ROC22. [Conclusion] Under the condition of drip irrigation, the output of sugarcane was significantly higher than that of non-drip irrigation control, the economic efficiency was extremely significant, while the sugar content of sugarcane decreased slightly. The sensitivity of several new varieties of gui sugar to water was more than that of the control ROC22.