青黑土是淮北平原分布很广的一种具有腐泥状黑土层和潜育性砂姜层的暗色土壤,在土壤学文献上最早称为“砂姜土”,并区分为“高地砂姜土”和“湖地砂姜土”.解放后曾定名为“潜育褐土”,作为褐土的一个亚类,个别文献上亦曾称为“草甸褐土”,“砂姜黑土”和“砂姜草甸土”.尽管命名很多,但对于其形成和特性 Dark-black soil is a kind of dark soil with sapropelic black soil layer and gritty sand layer distributed widely in the Huaibei Plain. It is earliest known as “Shajiang soil” in the soil science literature and is divided into “ ”And“ sand ginger soil lake. ”After the liberation was named“ latent cinnamon, ”as a subcategory of cinnamon, individual literature has also been called“ meadow cinnamon ”,“ sago ginger black soil ”and “Sand ginger meadow soil.” Although named a lot, but its formation and characteristics