Different Reclamation Years Of Mine Reclamation Soil Physical And Chemical Properties And Fertility On Xiaoyi Of ShanXi

The study based on the mine reclaimed soil in Xiaoyi city, research soil physical and chemical properties and soil fertility, The results show that:1In reclamation, the soil bulk density showed a trend of decrease, reclamation5years after the reduction of soil bulk density of0.09g/cm3; after reclamation of soil water content significantly lower than contrast with1.69-3.89%, surface soil water content increased along with the extending length of reclamation; As the top layer of soil deepen, PH value decrease gradually, organic matter content increases gradually.2The same years of reclamation soil within0-20cm soil gravel content is less, along with the extending length of reclamation, sand and silt are gradually reduced. With the increase of depth,>2mm gravel content showed a trend of increasing.3After reclamation of soil total nitrogen content in different soil layer, respectively, compared with0.35-0.38g/kg; when reclamated from1-5years, the layer of0～20,20～40,40-60cm soil effective phosphorus content than controls respectively0.04-0.18g/kg, rapidly-available potassium content, respectively, compared with the control treatment significantly increased0.6-3.3mg/kg; soil nutrient content is close to control soil, showed that along with the increasing length of reclamation, soil nutrient content increased gradually, and with the deepening of soil, soil nutrient content showed a trend of decline. This is due to the mining area land reclamation soil in the long-term natural, artificial and cultivation measures, under the influence of factors such as the soil begins to maturation.