大白菜是北方地区种植面积最大、供应时间最长的蔬菜之一,其生产的好坏与丰富城乡人民群众的“菜篮子”有着极为密切的关系。而大白菜种子的生产又直接关系到大白菜生产的丰欠。近年来,大白菜生产上普遍采用了抗病、优质、高产的一代杂种,保证了大白菜的生产和供应,其杂交种子主要采用自交不亲和系和雄性不育两用系进行制种,该课题组经过多年的实践,根据我省的生态条件,在利用雄性不育两用系进行大白菜杂一代种子生产方面积累了一定经验,现介绍如下: Chinese cabbage is one of the vegetables with the largest planting area and the longest supply time in northern China. Its production is very closely related to the “vegetable basket” that enriches the mass of people in urban and rural areas. The cabbage seed production is directly related to the production of cabbage owed. In recent years, Chinese cabbage production has generally adopted the generation of disease-resistant, high-quality and high-yielding hybrids to ensure the production and supply of Chinese cabbage. The hybrid seeds are mainly made from self-incompatible and male-sterile dual-purpose lines After years of practice, the group has accumulated some experience in utilizing the male sterile lines for producing hybrid Chinese cabbage according to the ecological conditions in our province. The introduction is as follows: