甜瓜是我区特产之一,在国内外享有盛誉。但自1970年以来,我区各地种植的甜瓜发生大面积死亡,尤以吐鲁番、鄯善、乌鲁木齐郊区为甚,有的生产单位甚至不敢种甜瓜。过去认为甜瓜大面积死亡的主要原因是镰孢菌侵染所致,称其为枯萎病。 1979—1981年,我们对这种病害的田间症状和发病条件进行了调查,对病原菌进行了分离和回接试验,发现甜瓜大面积罹病死亡的致病菌是疫霉菌而不是镰孢菌,故应改 Melon is one of our specialty, renowned at home and abroad. However, since 1970, large numbers of melons planted in various districts of our country have died, especially in Turpan, Shanshan and Urumqi suburbs. Some units even dare not plant melons. In the past, the main cause of large-scale death of melon was caused by Fusarium infection, which was called Fusarium wilt. From 1979 to 1981, we investigated the field symptoms and disease conditions of this disease and isolated and re-tested the pathogenic bacteria. We found that the pathogen causing death in a large area of ​​melon was Phytophthora infestans rather than Fusarium Should be changed