夏季芹菜是如皋市夏季蔬菜淡季的主要种植品种之一,经济价值较高,一般年份亩产值可达2000元以上。由于夏季高温等因素的影响,芹菜叶斑病常年发生严重,重发田叶被害率可达95%以上,发病植株瘦小,老化,食用性大为降低,商品率减少,甚至绝收。笔者通过近5a的田间观察和药剂试验,基本 Summer celery is Rugao summer vegetable off-season one of the main varieties of cultivation, higher economic value, the average annual output value of up to 2,000 yuan per mu. Due to the impact of summer heat and other factors, celery leaf spot disease is serious all the year round, and the damage rate of re-sending field leaves can reach more than 95%. The incidence of thinning, aging and edibleness of the diseased plants is greatly reduced, and the commodity rate is reduced or even exceeded. Nearly 5a through the field observation and pharmaceutical tests, the basic