选育经过过去,我们通辽市建国公社种植的大白菜多数是当地农家品种“小根白菜”,并且还是留纯,一年只能收一茬。为了解决麦茬复种和大白菜优质高产的问题,1963年工农大队农科组用“小根白菜”做母本,“开源二混子”做父本进行自然杂交;1964年又以上述杂交一代为母本,“兴城中青麻叶”为父本, Breeding After the past, most of the Chinese cabbage we planted in Tongliao City State-owned Commune is local small-breed cabbage, which is still pure, and can only be collected one year. In order to solve the problem of multiple cropping of stubble and high quality and high yield of Chinese cabbage, in 1963, the agrochemical team of the workers and peasants brigade used “small root cabbage” as the female parent and “open source two mixed seed” as the male parent for natural hybridization. In 1964, The female parent, “Xing Cheng Zhongmai leaves” as the father,