对大豆重迎茬的黑土和黑钙土进行养分分析。结果表明，随着连作年限增加，黑土（哈尔滨）全Ｎ、全Ｐ、缓效Ｋ、碱解Ｎ、速效Ｐ、速效Ｋ、有效Ｆｅ、Ｚｎ、Ｍｎ含量以及ｐＨ值都下降，有机质变化不明显；黑钙土（齐齐哈尔）全Ｎ、全Ｐ、缓效Ｋ、碱解Ｎ、速效Ｋ、有机质含量呈增加趋势，而速效Ｐ、有效Ｃｕ、Ｚｎ、Ｆｅ、Ｍｎ含量以及ｐＨ值则呈下降趋势。 Nutrient analysis of black soil and chernozem which were stubbled to soybean. The results showed that the content of total N, whole P, K, Alkaline N, available P, available K, available Fe, Zn, Mn and available pH decreased in black soil (Harbin) , Total N, total P, slow-acting K, alkaline solution N, quick-acting K and organic matter content in Chernozem (Qiqihar) increased, while the contents of available P, available Cu, Zn, Fe, Mn and pH decreased .