谷子粒黑穗病也叫粒粉病、黑穗病,是谷子的主要病害之一,在我国北部主要谷子产区都有不同程度发生。在我区种植谷子区也有零星发生,最高发病率为10%~20%。一、发病症状发病于穗部籽实,出现于抽穗后,病株较矮,穗形细长,抽出稍迟,全穗或部分受害。因病穗较轻,故在田间多直立而不下垂,或略下垂。病穗乌黑色,不象健穗呈黄熟色(黄谷)、红熟色(红谷),黑谷较少发生粒黑穗病。病粒较健粒稍大,暗灰色,圆形至卵形, Smut grains, also known as powdery mildew, smut, is one of the major diseases of millet, in the major producing areas of the millet in northern China have varying degrees of occurrence. Millet area in our area also sporadic occurrence, the highest incidence of 10% to 20%. First, the incidence of symptoms in the ears of the seed, appeared in the heading, the shorter plants, spike slender, took out later, the whole spike or part of the victim. Due to lesser panicles, it is more vertical in the field without sagging, or slightly sagging. Black ear disease panicles, unlike Jian Sui was yellow color (yellow valley), red ripe color (red valley), black valley less smut. Slightly larger particles than the health tablets, dark gray, round to ovate,