小麦腥黑穗病,俗称黑疽。感病麦穗呈浓绿色,形成一包黑粉(病菌孢子),用手指一捻可嗅到腥臭味。该病主要由种子带菌传播,近几年农户之间相互换种频繁,使带病种子扩大蔓延;其次是打场及麻袋、扫帚、簸箕等用具,都可以使病菌大量传播。 Wheat tangled smut, commonly known as black gangrene. Sick ears were dark green, forming a pack of black powder (bacteria spores), a twist with your fingers can smell stench. The disease is mainly spread by seed carriers. In recent years, peasant households have exchanged seeds frequently and expanded the spread of diseased seeds. Followed by playing fields and sacks, brooms, dustpan and other utensils, large quantities of pathogens can be spread.