在自然条件下研究了淮北524个夏大豆品种(系)中大豆豆秆黑潜蝇危害的程度和品种间的差异。结果表明,品种的被害率100％,其中95％品种被害株率90％以上,未发现不受蝇害的品种。蝇害程度年份间有明显不同。品种间虫道长度的差异大于虫量差异。试验鉴定出蝇害较轻的抗蝇品种(系)6个,较重的感蝇品种5个,为研究抗性性质及抗性遗传提供条件。 In natural conditions, 524 summer soybean varieties (lines) in Huaibei Soybean stalk black miner harm degree and the difference between cultivars. The results showed that 100% of the varieties were killed, of which 95% of the varieties damaged more than 90% of the strains, not found in fly-free varieties. The degree of flies was significantly different between years. Differences in length of the larvae between species were greater than those of the insects. Six antifungal species (lines) with lighter flies were identified, and five heavier ones were identified, which provided conditions for the study of resistance and inheritance of resistance.