福油4号是福建省农科院耕作所以普通甘蓝型油菜21006为母本、西德“双低”甘蓝型油菜姚格勒（Erglu）为父本，经过有性杂交选育而成的“双低”甘蓝型油菜新品种。1993年2月通过福建省农作物品种审定委员会审定命名。特征特性属春性品种，花芽分化始于4．0－45叶。全生育期在我 Fuyou 4 was cultivated by Fujian Academy of Agricultural Sciences so the common bluebush (Brassica napus) 21006 as the female parent, West Germany “double low” Brassica napus Yale (Erglu) as the male parent, after sexual cross breeding “ Double low ”new varieties of Brassica napus. February 1993 through the Fujian Provincial Crop Variety Approval Committee validated named. Characteristics are spring varieties, flower bud differentiation began in 4.0-45 leaves. The whole growth period in me