Abstract:

In order to provide the reference for selecting and extending the fine montane sugarcane varieties of drought-resistance, and further solve the problems (low sugarcane yield and sucrose content, etc.) of development of the montane sugarcane, comparative test of 6 drought-resistant sugarcane varieties (strains) were conducted on sloping dryland of Eshan County, and the author analyzed the drought resistance differences among sugarcane varieties. The results showed that the superior drought resistance (characterized by the high yield and high sucrose) for sugarcane were occurred in Dezhe03/83, Gaohaiba1 and Yunzhe03/103, which respectively presented the cane yield of 97.80 t/hm2, 83.05 t/hm2, 72.40 t/hm2, accounting for 110.93%, 94.20%, 82.11% of the comparison variety (ROC22, 88.16 t/hm2), and the respective sugar yield of 11.01 t/hm2 ,11.30 t/hm2, 10.58 t/hm2, increasing by 10.65%, 13.57%, 6.33% than the comparison variety (9.95 t/hm2). Therefore, Dezhe03/83, Gaohaiba1 and Yunzhe03/103 could be preliminarily considered as the fine montane sugarcane varieties of drought-resistance, and their ratoon need to be further experimental observation.