To investigate the effect of contour reverse slope terrace land preparation on soil improvement in cultivated land,the study compares the effects of undisturbed slope farmland(CK)and contour reverse slope terrace sample land(CRT)on soil physicochemical properties and corn yield in a small watershed.The results show that the total aggregate content of the contour reverse slope terrace plots has increased to varying degrees,and increased with the extension of the land preparation period.In the profile,the total aggregate content decreases with the increase of depth,indicating that the surface soil structure is better,and leveling the contour slope is beneficial for improving the soil structure.Contoured sloping terraces are a protective tillage method that can improve soil structure,increase soil organic matter content,and thus increase soil enzyme activity.The measures of contour and slope gradient can promote the growth and development of corn,and improve its fruiting ability.It is an effective measure to improve the yield and quality of corn on sloping farmland,and its effect increases with the extension of land preparation years.
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