大白菜(Brassica Pekinensis Rupr)是二年生作物。一般在头年秋季完成其营养生长,在生长后期及贮藏期间通过春化阶段,次年春天定植露地开花结籽而完成其繁殖时期。大白菜采种一般都是选择生长健壮、无病虫害、具有原品种特征特性的优良母株,经过贮存于次年春天栽出采种。这种采种方法由于种株是在充分表现出原品种的性状后选出,因此 Chinese cabbage (Brassica Pekinensis Rupr) is a biennial crop. The vegetative growth is generally completed in the first fall of the year, during the later stages of its growth and through the vernalization stage of its storage, and the spring of the next planting season begins with its flowering and seed setting to complete its breeding season. Chinese cabbage seeds are generally choose to grow robust, disease-free pests, with the original characteristics of the characteristics of the original varieties of mother plants, after storage in the next spring planting planted. This method of seed selection because the strains are fully selected after the performance of the original species selected