通过人工接菌方法比较了６个小麦主栽品种间感染纹枯病的差异，结果表明，高感类型有阜阳８６１、温麦４号和皖麦１９，中感类型有扬麦１５８、豫麦１８和豫麦２１．各品种苗期病株率反映不出品种感病程度的差异，以灌浆后期的病情指数为标准比较品种间抗感染程度较为适宜．认为寄主生育阶段影响小麦纹枯病的ＩＳ关系．回归分析表明，按内茎和外茎发病程度分级可减少田间调查误差，且省时省工． The results showed that there were Fuyang 861, Wenmai 4 and Wanmai 19 among the six susceptible cultivars, and the susceptible varieties were Yangmai 158, Yumai 18 and Yu wheat 21. The rate of diseased plants at the seedling stage did not reflect the difference of the susceptible degree of the cultivars. It was more appropriate to compare the degree of anti-infectives among the cultivars by comparing the disease index at the late filling stage. It is thought that the stage of host fertility affects the relationship of IS in wheat sheath blight. Regression analysis showed that according to the incidence of internal stem and external stem grading can reduce the field survey error, and save time and labor.