XDA28070103 Data Set of Straw and Organic Fertilizer Deep Mixed Ploughing Layer Thickening and Carbon Increase Technology

Meanwhile, due to the low nutrient content in deep soil layers, deep mixing of straw alone cannot provide sufficient organic carbon for the subsoil. Focusing on deep mixing and returning of straw and organic fertilizer, this project adopts supporting technologies including organic fertilizer composting, full mechanization, and elite varieties.

It effectively improves the structure of heavy clay soil and rapidly increases soil nutrient content while thickening the plough layer. A 1,000-mu core demonstration area was established in Hailun City, Heilongjiang Province, to demonstrate the technology of straw and organic fertilizer deep mixing for plough layer thickening and carbon sequestration. The demonstration results showed that deep mixing and returning of straw and organic fertilizer improved soil fertility in the 0–35 cm soil layer, enhanced aeration and water conductivity of soil aggregates, and promoted soil nutrient storage capacity.