玉米青枯病严重影响当年和翌年产量。病株后期发生茎腐甚至倒伏。感病玉米当年的千粒重和株粒重分别降低20%和25%左右,穗长、结实长和行粒数降低5-10%,早熟种、矮秆种和发病早、发病重的受影响更大。病株玉米种子的发芽势、发芽率和幼苗生活力下降,后代千粒重和株粒重等也明显降低(5—25%)。病株种子和健株种子的粗蛋白含量无显著差异。 Corn bacterial wilt severely affected the current and next year’s production. Stem rot even late lodging. In the same year, the 1000-grain weight and grain weight of susceptible maize decreased by 20% and 25%, respectively, while the spike length, grain length and grain number decreased by 5-10%. The precocious species, dwarf species and early onset and severe morbidity were more affected Big. Maize seed germination potential, germination rate and seedling viability decreased, offspring 1000 grain weight and grain weight was also significantly reduced (5-25%). There was no significant difference in crude protein content between diseased and healthy plants.