湘科三号脐橙是从纽荷尔脐橙芽变株系中选育的近圆形的脐橙新品种。以纽荷尔脐橙和湘科一号脐橙为对照品种,在宜章县宜众果业园对湘科三号脐橙的抗病性、抗虫性、生理抗性和产量进行了田间鉴定。结果表明:湘科三号在宜章县表现出较强的适应性,其抗性水平与两个对照品种一致,平均产量为31.9 kg/株,与纽荷尔脐橙的产量相当,比湘科一号脐橙的产量高4.8 kg/株。 Xiangke No. 3 navel orange is a new round of navel orange from Newhall navel orange bud mutant strains. The Newhall navel orange and Xiangke No.1 navel orange were used as control varieties, and the disease resistance, insect resistance, physiological resistance and yield of Xiangke No.3 were identified in Yizhong Fruit Industry Park in Yizhang County. The results showed that: Xiangke No.3 showed a strong adaptability in Yizhang County. The resistance level was consistent with that of the two control varieties with an average yield of 31.9 kg / plant, which was comparable to that of Newhall navel orange, One navel orange production 4.8 kg / plant.