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关于流行性蚜霉菌(Entomophtuorafresenii)周年发生规律在国内外未见文献报道,国外仅有蚕豆蚜、柑桔蚜等害虫上流行情况的零星资料。为了利用该菌防治多种蚜虫,我们于1973—77年连续5年以棉蚜为主要侵染寄主,在关中地区系统调查研究了该菌的发生发展规律和几种作物上蚜虫受侵后病菌流行情况,并于最近4—5年用于防治棉蚜研究,获得了明确结论。一、发生发展的基本规律 1.越冬阶段: 1975—77年于10月下旬至11月中旬在宝鸡市杨陵区及省东大荔县的花椒、石榴树上,见到较多的棉蚜流行性蚜霉菌死蚜,蚜
There are no reports about the annual occurrence of Entomophtuora fresenii at home and abroad. There are only sporadic data on the prevalence of pests such as broadleaf aphid and citrus aphid in foreign countries. In order to use this bacterium to control many aphids, we used cotton aphid as the main host of infection in 1973-77 for 5 years in a row. We investigated the occurrence and development of this bacterium in Guanzhong area and the pathogen of aphid infestation on several crops Epidemic, and in the recent 4-5 years for the control of cotton aphid research, obtained a clear conclusion. First, the occurrence of the basic law of development 1 overwintering stage: 1975-77 in late October to mid November in Baoji City Yangling District and Dong Dali County pepper, pomegranate tree, to see more cotton aphids epidemic Aphids Moldy aphids, aphids