Petch is one of the worldwide destructive disease of wheat in the warm, semi-humid and humid regions. Fusarium head blight (FHB) of wheat has been linked to at least 20 causal organisms, but FHB mostly caused by Fusarium graminearum in China and America.

• 引起小麦赤霉病的镰刀菌至少有20种，我国和美洲的主要致病菌为禾谷镰刀菌(Fusarium graminearum Schw)。