安徽大别山南麓,地处北纬29°48′～31°05′,属我国柑桔分布的北缘。过去这里没有成片桔园,只有少量零星桔树。1958年安庆地区曾在其最南端,与江西交界的东至县的园艺场,引种柑桔苗数十万株,但由于没有考虑小气候条件,普遍种植,冻害严重,到1969年几乎全部死亡。1973年以来,该地区又先后引进大量柑桔苗(主要是温州 Anhui Dabie Mountain south, located at latitude 29 ° 48 ’~ 31 ° 05’, is the northern edge of China’s citrus distribution. In the past, there was no such thing as a piece of orange orchard, only a few sporadic orange trees. In 1958, Anqing Prefecture introduced hundreds of thousands of citrus seedlings at the horticultural field in Dongzhi County, the southernmost point of its border with Jiangxi. However, due to its lack of consideration of microclimate conditions, widespread planting and serious frost damage caused almost all deaths in 1969. Since 1973, the region has introduced a large number of citrus seedlings (mainly Wenzhou)