极早熟大白菜新品种──北京小杂５０号北京小杂５０号大白菜是北京市农林科学院蔬菜研究中心近年来育成的一个极早熟、耐热、抗病的大白菜新品种，此品种的育成和推广．填补了北京市极早熟大白菜品种的空白，并为８、９月蔬菜淡季的供应增添了品种花色。该品种于１９９２... Very early maturity of new Chinese cabbage - Beijing 50 small hybrid No. 50 hybrid Beijing cabbage is a vegetable research center in Beijing Academy of Agriculture and Forestry in recent years bred a very early, heat-resistant, disease-resistant Chinese cabbage new varieties of this variety Bred and promoted. It fills the blank of the very early maturing Chinese cabbage varieties in Beijing and adds variety to the supply of vegetables in August and September. The breed in 1992 ...