小麦矮腥黑穗病(Tilletia controversaKnhü.)的传染方式和普通腥黑穗病不尽相同。矮腥黑穗病菌孢子能借土壤传染,在土壤内能存活七、八年,甚至十年以上。矮腥黑穗病菌的侵染期也较长,不限于小麦的胚芽鞘期,从12月到翌年4月均能感病,是一种相当顽强和比较不易防治的病害。因此必须认真处理带菌小麦。 这种黑穗病菌除为害小麦外,其它寄主还有黑麦和60多种禾本科杂草,但在自然环境条件下较少 Tilletia controversaKnhü. Infection is not the same as an ordinary fish-head smut. Dwarf gilt spores can soil infection, can survive in the soil seven or eight years, or even more than ten years. Short stinking ear smut longer duration of infection, not limited to the coleoptile period of wheat, from December to April the following year can be susceptible to disease, is a very tenacious and more difficult to control the disease. Therefore, we must seriously deal with carrier wheat. In addition to triticale, the hosts also have rye and more than 60 gramineous weeds but less in natural environments