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1999年 6～ 8月，我省多个乡镇大面积严重发生竹荪球腐烂现象，前后两个月时间，大批正在结球出菇的竹荪腐烂在菇床，其发病面积之广、腐烂速度之快，杂菌为害之剧，经济损失之大均是这些年来前所未有的，给菇农造成了难以估量的损失。为此，我们对发病严重的地县进行调查取样
From June to August 1999, a large area of many towns and villages in our province occurred a large scale of decoction of Dictyophora rotundifolia. Two months ago, a large number of Dictyophora were decayed on the bed of Mushrooms. The disease area was wide and its decay rate The rapid, miscellaneous germs damage drama, the great economic losses are unprecedented in these years, to mushroom farmers caused incalculable losses. To this end, we conducted a survey of severely affected counties