小麦赤霉病病小穗率与开花期、株高、穗长、有效小穗数有表现型和基因型的极显著或显著负相关，与每穗粒数有基因型的显著负相关；与小穗密度有表现型和基因型的极显著正相关。小穗密度对病小穗率的直接作用最大，其次是开花期和每穗粒数。小穗密度在１１个性状中对病小穗率的间接作用最大。 Fusarium head blight rate was significantly or significantly negatively correlated with phenotypes and genotypes at flowering stage, plant height, panicle length, number of effective spikelets, and negatively correlated with the number of genotypes per panicle; Spikelet density was significantly and positively correlated with phenotype and genotype. The spikelet density had the greatest direct effect on the disease spikelet rate, followed by the flowering stage and grain number per spike. The spikelet density had the largest indirect effect on the disease spikelet rate in 11 traits.