n.the layer of soil between the topsoil and bedrock

同義詞：undersoil

Subsoiling
Subsoiling
subsoiling
Review of Subsoiling Techniques and Their Applications
Effects of subsoiling on soil moisture under No-tillage 2 years later
Effects of Subsoiling on Soil Moisture Under No-Tillage for Two Years
Subsoiling for Nitrogen Applications to Corn Grown in a Conservation Tillage System
Compaction and Subsoiling Effects on Corn Growth and Soil Bulk Density
Effect of subsoiling and subsequent tillage on soil bulk density, soil moisture, and corn yield ☆
Effect of subsoiling on soil bulk density, penetration resistance, and cotton yield in northwest of Iran.
Water Infiltration and Storage affected by Subsoiling and Subsequent Tillage
The adoption of annual subsoiling as conservation tillage in dryland maize and wheat cultivation in northern China
Wheat response and residual soil properties following subsoiling of a sandy loam in eastern Montana