芹菜叶片上长黄斑是影响产量和质量的的大敌。这种病斑叫叶枯病,病斑一般为圆形,淡褐色。发病初期为水浸状,边缘明显,潮湿时病斑上散生一些小黑点。芹菜叶柄的病斑为长形,稍凹陷,该病病菌能在种子和残株上越冬,靠雨水溅射或风力吹送,从植株的气孔和表皮侵入。芹菜黄斑病在低温高湿的环境下,尤其是晚间结露的情况 Long green celery leaves is the enemy of production and quality. This disease is called leaf blight, the lesion is generally round, light brown. Early onset of flooding-like, obvious edge, damp spot on the sick spot some small black spots. Celery petiole lesions for the long, slightly depressed, the pathogen can overwinter on the seeds and stubble, by rain splashing or wind blowing, from the plant’s pores and epidermal invasion. Celery maculopathy in low temperature and humidity environment, especially in the evening condensation situation