本文报道了作者1989～1990年对兰花圆斑病的研究结果。
During 1989~1990, the author studied the round spot of orchid in Hangzhou district.
叶片病斑初为暗褐色小点，后扩大成黑褐色圆斑，潮湿时在叶片正面产生橘红色粘质小点，干燥时转变为黑色；
The viscid dot appears on the front of blade, when it is moist, and change into black at the time of the dryness;
叶片病斑初为暗褐色小点，后扩大成黑褐色圆斑，潮湿时在叶片正面产生橘红色粘质小点，干燥时转变为黑色；
The viscid dot appears on the front of blade, when it is moist, and change into black at the time of the dryness;
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