英文內容大要： Taiwan introduced in 1909 by Japan, in 1924 by the American direct introduction cultivation, 1,951 in 1951 introduced 9 varieties by US to plant experimentally again in the Taitung area. 1,972 o'clock Taidong County cultivation area amounts to 1,500 hectares and establishes the late logical sequence summer orange specialized area in the Taidong County inferior Nanxiang, 1,974 cultivations area amount to 3,000 hectares, pities because 64 and 66 years two long-term big droughts causes the sweet orange dry to die one after another, at that time and further because the industrial structure change, the countryside labor force shift to the metropolis, created the orchard massively to leave uncultivated, the industry rapidly withered. Item night before last logical sequence Xia Ch'eng in Taiwan only and the minority fragmentary cultivation, the main habitat is Taidong County, the cultivation area approximately 60~79 hectare, mainly cultivates the region to distribute villages and towns and so on Mt. Guanshan, Dong River and success eastern part, has become counts the area to have agriculture of special product the characteristic, the Mt. Guanshan peasant association and names is "fragrant Ding".