１９９２～１９９４年在５个品种田间成株倒２叶和倒３叶上，以重复３次或４次测定了品种慢白粉抗性的４种组分。提出用慢白粉指数（ＩＳＭ）表达品种的抗病性。ＩＳＭ是病害最终严重度与单菌落面积之乘积，将其进行方差分析和ＳＳＲ测验（Ｐ＝０．０５），按显著性差异分群，ＩＳＭ较低的品种具有慢白粉抗性。该法使各品种在慢白粉程度序列中的位置明确体现出来，便于综合评价品种的慢白粉抗性。陕２１３小麦为慢白粉品种，接种１３个小种表现为非专化抗性 From 1992 to 1994, four varieties of slow white powder resistance were tested in three varieties or four times in five varieties of field. The disease resistance of cultivars expressed with slow white flour index (ISM) was proposed. ISM is the product of the final severity of disease and the area of ​​single colony, which is subjected to analysis of variance and SSR test (P = 0.05), grouped by significant differences, and the lower ISM with slow white powder resistance. The method of each species in the degree of slow white powder sequence clearly reflected in order to facilitate the comprehensive evaluation of varieties of slow white powder resistance. Shaan 213 wheat is a slow white powder variety, inoculated with 13 races showed non-specific resistance