芹菜叶斑病又叫晚疫病、斑枯病，是棚室芹菜的重要病害。而且贮藏期间还可继续危害，对芹菜的质量和产量都有很大影响。一、发病症状植株地上部分都能感病受害，以叶片为主。发病初期在叶片上产生浅黄色水清状小病斑，呈圆形或近国形，多群体着生，常相互融合成不规则形斑块，? Celery leaf spot, also known as late blight, spot blight, is an important disease of greenhouse celery. And can continue to harm during storage, the quality of celery and yield have a great impact. First, the symptoms of plant disease can damage the upper part of the leaves. Early onset in the leaves produce light yellow water-like small lesions, was round or near the country, many groups of students, often merged into irregular shaped plaque,?