十字花科蔬菜是我国主要的蔬菜作物之一,特别在北京地区,其需求量与食用时间超过其它任何一种蔬菜。十字花科蔬菜黑斑病,七十年代以来有加重的趋势,目前已成为北京地区主要蔬菜病害之一。该病分布普遍,为害期长,所有十字花科蔬菜均有发生,以白菜、油菜、萝卜、芥菜等受害最重,严重时大白菜可减产1—2成。更重要的是此病种子带菌率高,传播途径广,值得引起重视。 Cruciferous vegetables are one of the main vegetable crops in China, especially in Beijing. Their demand and consumption time exceed that of any other vegetables. Cruciferae vegetable black spot disease, the seventies have aggravated trend, has now become one of the major vegetable diseases in Beijing. The disease is widespread, the damage period is long, all cruciferous vegetables have occurred, with cabbage, rape, radish, mustard and other victims of the most serious, severe Chinese cabbage can be reduced by 1-2 percent. More importantly, the disease with high rate of seed carriers, a wide range of routes of transmission, it deserves attention.