1983年7月下旬,作者在西宁市郊进行蔬菜病害调查时,发现沈家寨公社农科站1.2亩茄子(武威棒槌茄)的叶片上出现大小不等的褐色圆形病斑,蔓延迅速,很快愈合布满全叶,整株从下至上所有叶片几乎全部发病(仅l—2片心叶未感病),发病率达100％,大有毁于一旦的趋势。在 In late July 1983, when investigating the vegetable diseases in the suburbs of Xining, the author found that there appeared brown round spots of varying sizes on the leaves of 1.2 mu of Shenjiazhai commune agricultural station, which spread rapidly Fast healing covered the whole leaf, the whole plant from the bottom up almost all the incidence of all leaves (only l-2 leaves heart disease is not susceptible), the incidence of 100%, a great ruin trend. in