本文对秭归县泄滩乡引进的奥林达、德尔塔、卡特、蜜奈四个夏橙品种，并以伏令夏橙作为对照，研究了引进品种的物候期、丰产性和果实品质表现，为三峡库区夏橙品种结构调整提供了理论依据，并介绍了良种配套的栽培技术措施。
The paper studies the phenology, yield and fruit quality of Orinda, Delta, Carter and Midknight Valencia orange which are introduced by Xietan in Zigui County. It analyzes the difference between the Valencia Orange with the new varieties, which provides theoretical foundation for the structure adjustment of summer orange in Three Gorges Reservoir Region. At the same time, the paper introduces the planting technique of improved varieties.
