Effect of the Depth of Soil Preparation on Soil Physical Properties

The effect of different depth of soil preparation on soil physical properties was studied in this paper.Water content of soil in blank space with deep soil preparation increased 0.46% than the contrasting blank space.Vertical temperature of soil with deep soil preparation changed little than that with shallow soil preparation.At the range of 0~70 cm,the earth temperature with shallow soil preparation decreased 1.0 ℃and that with deep soil preparation decreased 0.9 ℃ when the depth of soil added 10 cm.Volume weight of soil with deep soil preparation reduced 11% than general soil preparation.Soil porosity increased 5.5%.The optimal depth of soil preparation was 50~60 cm and it was conductive to minimize establishment costs.