XDA28070105-001 Soil Dataset of Thick-layer Black Soil in Hailun City During Jointing and Maturity Stages of crop

To address the constraints observed in the Hailun Demonstration Area—namely, the decline in soil organic matter caused by the long-term, high-intensity utilization of black soil and the imbalance between soil use and maintenance, as well as the shallowing of the plow layer and the development of a thick, compact plow pan resulting from improper tillage—a field experiment was established in 2022 in Shengli Village, Qianjin Town, Hailun City (126.80° E, 47.43° N).

The study focused on the development and application of a rapid engineering approach for constructing a fertile plow layer based on a novel natural humus product. A total of six treatments were set up: conventional planting as the control (CK1), chemical fertilizer application (CK2), chemical fertilizer + straw return + organic fertilizer (CK3), chemical fertilizer + straw return + natural humus material (T1), chemical fertilizer + straw return + straw decomposition promoter (T2), and chemical fertilizer + straw return + soil conditioner (T3).