脐橙4号是中国农科院柑桔研究所新选育出来的优良芽变品种。经过多年多区试点的配套研究,脐橙4号主要有以下特点:丰产、优质、果大、耐贮、耐夏季高温高湿气候;坐果率高,基本无裂果,很少表现脐黄落果。其综合性状优于目前生产上栽种的华盛顿、朋娜等脐橙品种,被列入农业部重点推广品种。 脐橙4号的主要经济技术性 Navel Orange No. 4 is the new varieties of the best buds of the citrus research institute of Chinese Academy of Agricultural Sciences. After many years of multi-zone pilot matching research, navel orange No. 4 has the following characteristics: high yield, high quality, fruit, storage and resistance to high temperature and humidity in summer climate; fruit setting rate, the basic no crack fruit, rarely showing the umbilical drop fruit. The comprehensive trait is better than the varieties of navel oranges such as Washington, Pena planted in the production at present and is included in the key promotion varieties of the Ministry of Agriculture. Navel Orange 4, the main economic and technical