Table 3 The specific measures for different tillage treatments.

From: Tillage effects on soil properties and crop yield after land reclamation

Tillage treatments

Specific measures

Continuous conventional moldboard-tillage (CT)

The moldboard-tillage treatment consisted of mouldboard plowing to a depth of about 20–25 cm, and rotary blade interacted with soil to achieve pulverization with no crop residues after crop harvest

Sub-soiling/moldboard-tillage/sub-soiling tillage(ST)

Sub-soiling tillage and moldboard-tillage were rotated after crop harvest, moldboard-tillage after wheat harvest, sub-soiling after maize harvest. Sub-soiling tillage ploughed the soil to a depth of 30–35 cm with 40–60 cm width between the ploughing strips by sub-soiling shovel, and the maize residues were smashed to cover the surface of the soil

No-tillage/sub-soiling/no-tillage(NT)

No soil tillage is adopted in no-tillage practice, and the wheat residues were smashed to cover the surface soil. No-tillage and sub-soiling were rotated after crop harvest, the no-tillage after wheat harvest, sub-soiling tillage after maize harvest, and crop residues were smashed to cover the surface of the soil after crop harvest to prevent damage to soil structure