番茄晚疫病是一种世界性病害,我国南方和河北、陕西等地常有发生,新疆尚未见报道.1984年6月中旬,乌鲁木齐县七道湾公社十月大队五小队的番茄发生本病并迅速流行.我们于7月中旬至9月中旬多次前往调查,并采集病株、病果进行分离、回接和鉴定,证实本病确系番茄晚疫病菌侵染所致. Tomato blight is a worldwide disease, southern China and Hebei, Shaanxi and other places often occur, Xinjiang has not yet been reported .In mid-June 1984, Urumqi County seven Bay commune October team five teams of tomato disease occurs and quickly Epidemic.We went to investigate many times from mid-July to mid-September, and collected the diseased plants, the diseased fruits were separated, reconnected and identified, confirmed that the disease is caused by the infection of Phytophthora infestans.