辣椒疫霉病在国外已有50多年历史,在苏联、美国、日本都被列为重要病害进行研究。我国60年代初曾有类似病害,但未引起人们重视。70年代以来,本病在吉林、辽宁、青海、河北、北京、云南等省市均有发生,在新疆以乌鲁木齐市、昌吉、石河子、哈密、吐鲁番、库尔勒等地发生重。 本病系土壤带菌引起,病菌靠流水传播,发病条件易得到满足,发病急,防治难度较大。近年来各地从多方面开展了研究, Phytophthora capsici has been in foreign countries for more than 50 years and has been listed as an important disease in the Soviet Union, the United States and Japan. In the early 1960s, there were similar diseases in our country, but people did not pay much attention to it. Since the 1970s, the disease has occurred in Jilin, Liaoning, Qinghai, Hebei, Beijing and Yunnan provinces. Urumqi, Changji, Shihezi, Hami, Turpan and Korla occurred in Xinjiang. The disease caused by soil-borne bacteria spread by water, the incidence of conditions easily met, acute onset, prevention and treatment more difficult. In recent years, various aspects have been studied,