甘薯黑斑病也叫黑疤病,常引起死苗和烂薯,造成巨大损失。甘薯黑斑病病菌能刺激甘薯产生黑斑霉酮和黑斑二酮等有毒物质,人食后能引起头晕,牛吃后能引起气喘病。甘薯黑斑病是由子囊菌亚门的甘薯长喙壳菌引起的。薯苗受害一般在幼苗茎基部产生痘痕状黑色病斑,严重的种薯和幼茎都变黑腐烂。病苗移到大田后,叶片往往发黄脱落,严重时在幼茎及时柄上也会出 Black spot disease, also known as black scab, often causes dead shoots and rotten potatoes, causing huge losses. Sweet potato black spot bacteria can stimulate the sweet potato produce melanocyte ketones and dyestuffs and other toxic substances, can cause dizziness after eating human, can cause asthma after eating cattle. Sweet potato black spot is caused by Aspergillus subtillial sweetpotato. Potato seedling victims generally produce pockmark-like black lesions at the base of the seedling, with severe seed and young stems becoming black rot. After the vaccine is transferred to the field, the leaves often turn yellow and fall off, and in severe cases the young stems and stems also become expelled