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中白四号是用两个自交不亲和系配制而成的大白菜杂交一代新品种。 特征特性：植株生长势强，整齐一致。株高４８厘米，株幅７０×６５厘米，外叶深绿色，叶柄色绿，外叶数１１片。叶球头球形，叠抱，结球紧实，叶球色绿，叶球高４０厘米，球径２８厘米，球形指数１．４，单球重
Zhongbai No.4 is a new generation of Chinese cabbage crosses between two self-incompatible lines. Characteristics: Plant growth potential, neat and consistent. Plant height of 48 cm, 70 cm × 70 cm, outer dark green, petiole color green, the number of leaves 11. Leaf ball head spherical, stacked hold, tight ball, leaf green, leaf 40 cm high, 28 cm ball diameter, spherical index 1.4, single ball weight