江淮地区土壤养分空间变异性研究

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。

Study on the Spatial Variability of Soil Nutrient in Jianghuai Hilly Land Region,Anhui Province

In the light of soil distributions in Jianghuai hilly region,Anhui province, the study on spatial variability of soil nutrient was conducted. The results showed that there was a very huge spatial variability of available soil nutrient in the Yellow-drab soil and paddy one that derived from it in Jianghuai hilly region.The analysis results of 273 soil samples showed that the variability for active acid, available phosphorus and potassium, available trace element as boron,zinc and iron in space were huge; for pH and available nitrogen,little;and for organic matter and available calcium, magnesium, sulfur, copper and manganese,medium.Available N,K,Zn,P and B in soils were insufficient and the amount of medium and trace element such as available Ca,Mg,Cu,Mn,S and Fe were abundant.