桂糖57号在来宾蔗区的表现及其高产稳产性分析

Performance of Guitang 57 and Analysis of Its Yielding Ability and Yield Stability in Laibin Sugarcane Area

为评价甘蔗新品种桂糖57号在广西来宾蔗区的适应性及高产稳产性,加快优良新品种在蔗区的推广应用,在来宾市的桥巩镇、凤凰镇等多个种蔗大镇对桂糖57号进行了多点试验,采用高稳系数法和变异系数法相结合的方法进行分析和验证。结果表明:桂糖57号新植蔗的高产稳产性与桂柳05136相当,宿根蔗的高产稳产性更好,产量总体表现好;脱叶性中等,建议采用机械收获;早期(11月)蔗糖分不高,但12月份之后蔗糖分迅速提升到与桂柳05136相当的高糖水平,应适当延迟该品种的砍收时间。总的来看,桂糖57号在来宾蔗区表现为植株较高、中大茎、中早熟高糖、高产、稳产、宿根性强,相比当地主栽品种桂柳05136还具有抗倒伏、抗黑穗病、适宜机械化收获等优点。建议在来宾蔗区及同类型蔗区进一步推广种植。

In order to evaluate the adaptability,yielding ability and yield stability of the new sugarcane variety Guitang 57 in Laibin sugarcane area,and speed up the application of excellent new varieties in sugarcane area,multi-site experiments on Guitang 57 were carried out in Qiaogong Town,Fenghuang Town and other major sugarcane-producing towns in Laibin City.The high stability coefficient and the coefficient of variation were used to analyze and verify.The results showed that the yielding ability and yield stability of plant crop of Guitang 57 were similar to those of Guiliu 05136,and the ratoon cane had better yielding ability and yield stability,showing good performance of overall yield;the defoliation character was at a moderate level,so mechanical harvesting was recommended.In the early stage(November),the sucrose content was not high,but after December,the sucrose content increased rapidly to the same high sucrose level as Guiliu 05136,so the harvest time of this variety should be delayed appropriately.Generally,Guitang 57 showed the characteristics of higher plant,medium-large stems,medium-early maturity,high sugar,high yield,stable yield and strong ratooning ability in Laibin sugarcane area.Compared with the local main variety Guiliu 05136,it also has the advantages of lodging resistance,smut resistance and greater suitability for mechanized production.It is recommended to be further planted in Laibin sugarcane area and other similar areas.