山西是高粱的主要产区之一,栽培历史悠久,品种多,产量高。但近年来丝黑穗病发生普遍,为害严重,成为生产上亟待解决的问题。高粱丝黑穗病为土传病害,品种间抗病性差异和年度间发病率差异都较明显。近三十年来该病的发生发展趋势是:五十年代轻发生,六十年代不发生,七十年代有回升,近四,五年大流行。五十年代杂交高梁还没有问世,完全种植农家品种,丝黑穗病发生普遍较轻,而且只是在春季干旱的年份里感 Shanxi is one of the main producing areas of sorghum. Its cultivation has a long history, many varieties and high output. However, the occurrence of head smut has been widespread and serious damage in recent years, which has become a problem to be solved urgently in production. Sorghum smut is a soil-borne disease, and the differences in disease resistance and annual incidence among varieties are more obvious. The development trend of the disease in the recent three decades is as follows: the fifties occurred lightly, the fifties did not occur, the seventies rose, the last four or five pandemic. Fifties sorghum hybrid cross has not yet come out, the full cultivation of farm varieties, head smut is generally mild, but only in the dry spring years in the flu