早熟5号是浙江农科院园艺所采用自交不亲和系育成的早熟大白菜杂种一代。具有耐热优质、产量高等优良特性,而且,上市时间正是9～10月蔬菜淡季,经济效益和社会效益十分显著。1989年3月省农作物品种审定委员会审定通过。现本省80％以上的县普遍种植,已成为早熟大白菜的主裁品种;并在江西、湖北等十四个省份推广。 Early maturity on the 5th is the Zhejiang Academy of Agricultural Horticulture by self-incompatibility bred early generation of Chinese cabbage hybrid generation. With high quality heat-resistant, high yield and other excellent features, and, time to market is 9 to October vegetable off-season, economic and social benefits are significant. March 1989 Provincial Crop Variety Approval Committee approved. Now more than 80% of counties in the province are commonly planted and have become regener varieties of early-maturing Chinese cabbage. They are also promoted in fourteen provinces such as Jiangxi and Hubei.