DTOPSIS evaluation of 7 new sugarcane varieties planting in Liuzhou location of Guangxi sugarcane regional trial.

【Objective】The 7 new sugarcane varieties(lines) performance in field were comprehensively evaluated to select fine varieties in order to provide references on their extension and application in Liuzhou sugarcane planting areas.【Method】Under condition of Liuzhou sugarcane planting areas, 7 sugarcane varieties in Guangxi regional trial of new sugarcane varieties was used to conduct one-year-newly planting and one-year-ratoon comparative test. Their performances were comprehensively evaluated by using DTOPSIS method. 【Result】Among 7 tested sugarcane varieties, the budding rate of ratoon cane, tillering rate, effective stalks, cane yield, sucrose content and sugar yield of Guifu 98/296 showed better in general, but the other 6 varieties presented no apparent rules. The comprehensive traits performance of Guifu 98/296,Guitang 04/120 and Yulin 1 was better than that of ROC22(CK), while Liucheng 03/362, Guitang 04/2278 and Guitang02/496 were worse than ROC22(CK). DTOPSIS analysis results showed that Ci in sequence from high to low was Guifu98/296, Guitang 04/120, Yulin 1, Guitang 04/2278, ROC22, Liucheng 03/362 and Guitang 02/496. 【Conclusion】Guifu98/296, Guitang 04/120 and Yulin 1 were suitable for planting in Liuzhou areas and its similar climate areas, while Guitang 04/2278, Liucheng 03/362 and Guitang 02/496 were unfit for planting in Liuzhou City.