以江淮丘陵地区的土壤为研究对象 ,开展了土壤养分空间变异规律研究。结果表明 ,江淮丘陵黄褐土及由此发育的水稻土 ,养分状况存在着很大的空间变异性。 2 73个土壤样品测定结果表明 ,土壤活性酸、有效P和K、有效B、Zn、Fe等微量元素含量空间变异性较大 ,pH、有效N的空间变异性很小 ,有机质及有效Ca、Mg、S、Cu、Mn等中微量元素的空间变异性介于两者之间。土壤有效N、K、Zn、P、B较为缺乏 ,Ca、Mg、Cu、Mn、S和Fe等中微量元素含量丰富。 Taking the soil of Jianghuai hilly region as the research object, the spatial variation of soil nutrients was studied. The results showed that the nutrient status of yellow-brown soil in Jianghuai Hilly and the paddy soil developed there was a great spatial variability. The results of 73 soil samples showed that the spatial variability of soil active acids, effective P and K, available B, Zn and Fe was high, the spatial variability of pH and available N was small, the contents of organic matter and available Ca, The spatial variability of trace elements such as Mg, S, Cu and Mn is between the two. Soil available N, K, Zn, P, B is relatively scarce, Ca, Mg, Cu, Mn, S and Fe trace elements rich in content.