【摘要】 广西荔枝品种历经5个不同发展阶段,广西龙眼品种历经3个不同发展阶段,各个发展阶段的生产情况、特性不同。当前广西荔枝、龙眼产业进入了品种结构调整的新阶段,新品种选育取得较大进展,但存在着前期发展速度过快,品种规划不完善,品种结构不合理,产期集中、经济效益低;新品种选育进展缓慢,育种周期长、效率低等主要问题。应加强育种技术攻关,大力开展杂交育种,选育出更多新品种为生产服务;同时搞好品种规划布局,提高优质品种种植比例,发挥不同产区的气候优势,延长荔枝、龙眼鲜果上市时间,提高生产经营效益。更多还原

【Abstract】 Guangxi litchi cultivars have gone through five different development stages,and longan cultivars have gone through three different development stages,the production conditions and characteristics are different at each stage of development.At present,litchi and longan industry in Guangxi has entered a new stage of variety structure adjustment,and great progress has been made in breeding new cultivars.However,there are still some problems,such as rapid development in the early stage,imperfect variety planning,unreasonable variety structure,concentrated production period and low economic benefits.The main problems of breeding new cultivars include slow progress,long breeding cycle and low efficiency.Therefore,it is necessary to strengthen breeding technology and carry out cross breeding to select and breed more new cultivars for production.At the same time,the planning and layout of cultivars should be improved,the planting proportion of high-quality cultivars should be increased,the climatic advantages of different production areas should be brought into play,the time for fresh litchi and longan fruit to be listed should be prolonged,and the production and management benefits should be improved.更多还原