桂糖44号在桂中蔗区的适应性分析

Adaptability Analysis of Guitang44 in Sugarcane Area of Central Guangxi

在来宾市、柳州市每年选择4个地块,以当地主栽品种桂柳05136为对照,连续开展桂糖44号3年新植2年宿根共24点次的生产性试验,采用高稳系数与变异系数相结合的方法分析其高产稳产性,并结合桂糖44号在广西区域试验中的表现,综合评价其在桂中蔗区的适应性。结果表明,桂糖44号新植蔗在水肥条件适宜条件下的高产稳产性与桂柳05136相当,干旱时则略差,但仍有足够的有效茎数,可以继续保留宿根;宿根蔗的高产稳产性比桂柳05136更好,且随着宿根年限的延长,其优势越大;早期(11月)蔗糖分比桂柳05136高,属早熟高糖品种。桂糖44号在桂中蔗区表现为株高中等、中大茎、早熟高糖、高产、稳产、宿根性强、宿根年限长、抗倒伏、抗黑穗病、适宜机械收获,可在桂中蔗区及同类型蔗区进一步推广种植。

Four plots were selected in Laibin and Liuzhou every year,and the local main cultivar Guiliu05136 was used as the control to carry out a total of 24 productive experiments on three-year new plant cane and two-year ratoon cane of Guitang44.The method of high stability coefficient and coefficient of variation was used to analyze the yield,and in accordance with the performance of Guitang44 in Guangxi regional test,its adaptability in sugarcane area of central Guangxi was comprehensively evaluated.The results showed that the high and stable yield performance of plant cane Guitang44 was similar to that of Guiliu05136 under suitable water and fertilizer conditions,and slightly worse under drought conditions,but there were still enough effective stems to retain ratoon cane;the high and stable yield performance of ratoon cane was better than that of Guiliu05136,and with the extension of ratoon years,its advantage was greater;in the early stage(November),the sucrose content was higher than that of Guiliu05136, and it was an early-maturing and high-sugar variety.Generally, Guitang44 showed the characteristics of medium plant height, medium and large stem, early maturityand high sugar, high yield, stable yield, strong ratooning ability, long-term ratooning, lodging resistance,resistance to smut and suitability for mechanical harvesting. It could be further popularized and planted insugarcane area of central Guangxi and similar sugarcane areas.