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流行性蚜霉菌(Entomophthora fresenii)在我国广泛分布,并年年引起棉蚜等多种蚜虫的流行病,是一个有效地自然控制蚜虫的生物因素。美国学者MacLeod总结国际大量文献后指出:En.fresenii是蚜虫上广泛发生的真菌病原,有许多人企图在人工培养基上生长这个菌,但离开自然寄主没有被分离和培养成功。近年关于En.fresenii菌在国外只有极少数发生情况的报道,其他研究更少。在国内尚无人研究。为了利用该菌于防治棉蚜等害虫,我们首先摸索人工分离培养技术。现将初步结果报道如下。
Entomophthora fresenii is widely distributed in our country and causes the epidemics of many aphids such as cotton aphid every year. It is an effective biological control of aphids. MacLeod, the American scholar, summarizes a large number of international literature and points out that Enfresenii is a fungal pathogen widely occurring in aphids. Many people are trying to grow the bacteria on artificial media, but the natural host has not been isolated and cultivated successfully. In recent years there has been a very small number of reported cases of Enfresenii in foreign countries, with few other studies. No one in the country to study. In order to use the bacteria in the control of cotton aphids and other pests, we first explore artificial separation and culture techniques. The preliminary results are reported below.