大白菜是属于十字花科芸苔属的二年生植物,秋季播种,初冬收获,种株经过贮藏,次年移栽再抽苔开花、结籽。一、大白菜性状 1.根:根系分主根与侧根。直播的白菜主根长可达3尺以上。侧根向四周生长,密集在耕作层中,随着发芽、出苗、生长,侧根不断分枝并加强吸收能力。新分生的每条细根先端 Chinese cabbage is a biennial plant belonging to the cruciferous Brassica. It is planted in autumn and harvested in the early winter. Strain is stored after it is planted. First, the Chinese cabbage traits 1. Roots: root sub-root and lateral root. Live cabbage main root length of up to 3 feet or more. Lateral root growth to the surrounding, dense in the tillage layer, with the germination, emergence, growth, lateral roots continue to branch and enhance the absorption capacity. New root of each sub-fine root