小麦腥黑穗病（火烧麦）、锈病及白粉病，是云南省小麦生产中的三大病害，引起过严重的灾害。小麦腥黑穗病的病菌孢子附在麦种上，播种后，病菌随种子发芽侵入小麦苗内，在小麦体内生长繁殖。但在小麦生长前期，外表无任何症状，直到抽穗开花结实后，受病菌侵害的麦穗不结麦粒 Wheat Tartarus (fire wheat), rust and powdery mildew are the three major diseases in wheat production in Yunnan Province, causing serious disasters. The spores of wheat tauke disease are attached to the wheat seeds. After sowing, the germs invade the wheat seedling with the germination of the seeds and grow and multiply in the wheat body. However, in the early stage of wheat growth, the appearance without any symptoms, until the flowering and fruiting after blight, wheat ears affected by pathogen does not bear grain