我们在《贵州农业科学》1983年第一期发表的《慈菇黑粉病调查研究简报》中,主要报道了慈菇黑粉病菌冬孢子球的发生为害情况。在调查研究过程中,发现慈菇黑粉病菌分生孢子对慈菇的为害更为严重。如1983年7月上旬慈菇黑粉病发病高峰期调查:产生分生孢子的病斑,其病叶率达55.83％,病情指数为29.06,而产生冬孢子球的病斑,其病叶率仅21.31％,病情指数为6.85,可见前者比后者严重得多。但国内 In “Guizhou Agrotechnical Sciences,” the first issue of 1983, “Symptoms of Mushroom Mildew Research Briefing”, the main report of arrowhead fungus Mildew spores the occurrence of damage. In the course of the investigation and study, it was found that the conidia of S. gossypii were more damaging to D. argus. As early as July 1983 the peak incidence of Sickleness powdery mildew: conidia lesions, the diseased leaf rate of 55.83%, the disease index was 29.06, and produce the spores of teliospores, the disease leaf rate Only 21.31%, the disease index was 6.85, showing that the former is much more serious than the latter. But domestic