Physical And Chemical Properties Of Different Grassland Types In Response To Grazing Systems

In this study, Sonid Right Banner of Inner (experimental Areaâ… ), Xilinguole Xilinhot (experimental Areaâ…¡), Xilinguole Border Pastoral (Experimental Areaâ…¢) of soil in three pilot sites within the targeted through field sampling, indoor experiments using statistical methods of research in three pilot sites under different grazing systems on soil physical and chemical properties of the response.The main research results were as follows:1) Experiment areaâ… in the soil surface, soil moisture content was the highest grazing areas, grazing areas minimum; soil moisture content increased with soil depth did not show significant variation. Experimental areaâ…¡in the soil surface, soil moisture content was the lowest free grazing areas, grazing has the highest.â…¢grazing experimental area the highest soil moisture content, soil water content increased with soil depth is not a certain trend.2) Soil bulk density in the experimental areaâ…¢showed the largest grazing, soil bulk density levels were higher than the other fenced areas of grazing, soil bulk density in the grazing area did not differ much between the various layers. Capillary porosity of soil in the experimental area in each soil layerâ…¢, the performance of grazing area for the smallest and it exhibited the increase with soil depth of soil capillary porosity increased.In the experimental areaâ…¢the change of soil total porosity and capillary porosity of the soil were similar.3) Experiment areaâ… in total soil nitrogen, nitrogen, potassium, phosphorus, organic matter content of the highest in the grazing area, total K, total P content in the lowest free grazing area. Nitrogen, potassium, phosphorus content with increasing soil depth is gradually reduced. Total nitrogen,organic matter,total potassium,total phosphorus content with increasing soil depth did not show significant variation.4) The experimental zoneâ…¡soil total nitrogen, nitrogen, potassium, phosphorus, available phosphorus content in surface soil showed the largest grazing area, that of potassium in the soil surface showed the highest grazing areas, organic matter in the soil surface showed round grazing. Nitrogen, potassium, phosphorus content with the deepening of depth gradually reduced.5) The experimental areaâ…¢soil total nitrogen, available nitrogen, phosphorus, potassium, organic matter content with soil depth is gradually reduced to deepen. Total potassium, total phosphorus content with the deepening of depth did not show significant trends. 0 ~ 30cm soil layer from view, grazing grass compared to the free use of grazing use patterns are conducive to the accumulation of soil total potassium. Organic matter in the soil showed the highest content of rough play.6)There of the regional soil nitrogen,available K,available P as soil depth decreased gradually deepening content;Experiment areaâ… ,â…¡soil total nitrogen,nitrogen,potassium,phosphorus in the soil surface showed the largest grazing.