Data set of soil property changes under nitrogen fertilizer application and intercropping of leguminous forage grass treatments in 2024 and 2025

The data in the table are the original recorded data of the physical properties of soil in the field, carbon components, enzyme activities, and soil aggregate structure characteristics for the years 2024 and 2025. This table includes labels for rows and columns, as well as the full names, abbreviations, and measurement units of each indicator.