黑土占黑龙江省耕地面积一半以上,是肥沃的土壤。但是,开垦后用养结合不好,土壤肥力呈现明显下降的趋势。本文拟从研究黑土肥力下降及其与土壤复合胶体的关系,以及有机质培肥黑土的效果及其对土壤复合胶体的影响,探索黑土肥力下降原因及培育 Black soil accounts for more than half of the arable land in Heilongjiang Province and is fertile soil. However, after reclamation, the combination of keeping and raising is not good, and the soil fertility shows a significant decrease. This article intends to study the decline of black soil fertility and its relationship with soil colloids, as well as the effect of organic matter fertilizing black soil and its effect on soil compound colloids, to explore the causes of black soil fertility decline and cultivation