The Soil Quality Research In Typical Energy Development Areas Of Ordos City

The Ordos city of Inner Mongolia is vast with rich resources and land use type is varied. It has the typical energy development area and traditional farming. This article selects the field monitoring sample data of soil quality in yijinhuoluo and dalate county of erdos city in 2012-2014 to analysis, discusses the soil nutrient status and development under different land use ways.1.Two county soil quality index in 2012 shows that:the soil organic matter, soil total nitrogen, total phosphorus are presented with the increase of the depth of soil profile content gradually reduce the trend at the 0-30 cm, soil total k content shows with the increase of the depth of soil profile maintain a relatively stable trend at the 0-30 cm; salt content of soil sample averages 0.19-0.36 g/kg,in PH 8.57-9.26, present the weak alkaline.2.Soil organic matter, soil total nitrogen, soil total phosphorus amount show significant difference in different land use types (p< 0.05), soil total k content in different land use types shows no significant difference (p> 0.05); in two countys, organic matter content, total nitrogen, total potassium content are characterized by "a bit short of "short" "very short" level, total potassium content are in "a bit abundance" level.3.Between the various land use types in yijinhuoluo county in 2012, soil organic matter, total nitrogen, total potassium, salinity index variation coefficients is largest in natural grassland utilization mode, smallest in Irrigated land and the dry land;In 2013 and 2014, the irrigated land and the dry land of organic matter, The full effect of NPK content has improved steadily, a variety of other land use mode content of land quality indicators of gap is smaller; variation coefficient of soil quality indicators of irrigated land were greater than the natural grassland in dalate county in 2012; in 2013 and 2014, irrigable land to improve soil nutrient content to a certain extent, the index variation coefficient of soil quality with minimum variation coefficient of soil pH.