黑胫病(Phytophthora parasitica var.nicotianae)是我国烟草主产区的毁灭性病害,我省烟农称为“黑秆溜”,流行年份一般发病率为40—50％,严重时达70％,甚至成片死亡。国内外报道,烟草黑胫病菌存在着生理分化现象。为了给烟草抗黑胫病育种和抗病品种的合理布局提供科学依据,我们于1984—1985年对我省黑胫病菌生理小种的分化进行了大田病圃的签定。 Phytophthora parasitica var. Nicotianae is a devastating disease in the main tobacco producing areas of our country. The tobacco farmers in our province call it “black stalk slips”, with prevalence rates of 40-50% in prevailing years, 70% in severe cases, and even A piece of death. Domestic and foreign reports, there is a physiological differentiation of tobacco black shank. In order to provide a scientific basis for the rational distribution of tobacco anti-shank disease and resistant varieties, we conducted the Daejeon disease nursery between 1984 and 1985 for the differentiation of the physiological races of Phytophthora in our province.