大白菜是我省重要蔬菜之一,通常占冬春蔬菜总销费量的50%以上,因此,大白菜生产的丰欠将会直接影响城乡蔬菜的供应状况。我所为探索大白菜高产新途径,于1972年开展了大白菜雄性不育系的选育和杂种优势利用的研究工作,经过九年选育出“郑州早黑叶大白菜雄性不育系”和“郑州早黑叶×北京小青口”优良杂种在生产上推广应用。经多年试验示范,产量高而稳定,抗病能力强。1979年全省推广面积达3000多亩,平均亩产15000斤左右,最高亩产近20000斤,比当地品种增产30—50%。据各地引种试种 Chinese cabbage is one of the important vegetables in our province and usually accounts for more than 50% of the total sales volume of spring and winter vegetables. Therefore, the shortage of cabbage production will directly affect the supply status of urban and rural vegetables. In order to explore new ways for high yield of Chinese cabbage, in 1972, we carried out the research on the breeding and heterosis utilization of male sterile lines of Chinese cabbage. After nine years of breeding “Zhengzhou early black cabbage male sterile lines” And “early black Zhengzhou × Beijing Xiaoqingkou” excellent hybrids in the promotion of the application of production. After years of demonstration, high yield and stability, disease resistance. In 1979, the province’s promotion of an area of ​​3,000 mu, an average of 15,000 kilograms per mu, the highest per mu nearly 20,000 kilograms, 30-50% increase over the local varieties. According to the introduction of test species around