萝卜黑腐病是萝卜常见病害,俗称黑心病、烂心病,由细菌引起,主要为害萝卜、甘蓝、花椰菜、白菜、芥菜等十字花科蔬菜。该病使萝卜根内部变黑,失去商品性,生长期和贮藏期均可引起为害,能造成很大损失。提醒菜农注意防治。一、发病症状该病多从叶缘和虫伤口处开始,叶片发病,产生黄色斑,呈“V”字形向内发展,叶脉变黑,呈 Radish black rot disease is a common disease of radish, commonly known as black heart disease, bad heart disease, caused by bacteria, the main damage radish, cabbage, cauliflower, cabbage, mustard and other cruciferous vegetables. The disease black radish root internal, loss of commercial, growth and storage period can cause harm, can cause great losses. Remind vegetable farmers pay attention to prevention and treatment. First, the symptoms of the disease and more from the edge of the leaf margin and worm wounds began, leaf disease, resulting in yellow spots, was “V ” shape inward development of veins black, was