Long-term no-tillage farming mitigates waterlogging during extreme rainfall events in black soil (Mollisols) region of Northeast China

IF 6.6 1区农林科学 Q1 SOIL SCIENCE

Geoderma Pub Date : 2025-10-01 DOI:10.1016/j.geoderma.2025.117542

Shijie Qin , Zhuo Liu , Meng Tian , Lin Liu , Wei Hu , Richard Whalley , Tusheng Ren , Weida Gao

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引用次数: 0

Abstract

The increasing frequency of extreme rainfall events intensifies waterlogging-induced aeration stress on crops, highlighting the urgency for adaptive agricultural practices. This study evaluates the potential of long-term no-tillage (NT) farming to mitigate waterlogging risks on a silty clay loam in Northeast China by comparing with traditional moldboard plough (MP) farming using an 11-year field experiment. Rainfall simulation (40 mm h⁻¹) and dye-tracing were employed to study the dynamics water infiltration, and X-ray computed tomography (CT) was applied to examine soil pore characteristics (0–60 cm depth) and their responses (0–5 cm layer) to raindrop splashing. Results demonstrated that NT significantly enhanced water infiltration capacity, with a 161 % higher maximum infiltration depth (MID), an 65 % increase in total stained area (TSA), and 95 % less surface ponding compared to MP. Although MP exhibited higher total porosity (ε_total), macroporosity (>0.04 mm pores, ε_X-ray), and increased pore connectivity in the 0–20 cm layer, it had fewer biopores and greater vertical stratification of macroporosity compared to NT across the 0–60 cm profile. During rainfall events, the MP plot experienced a 28 % reduction in porosity of pores sized 0.2–1.0 mm and a 19 % increase in porosity of pores <0.2 mm in the surface layer, likely due to raindrop splashing, while NT maintained pore integrity through straw mulching. We conclude that long-term NT is effective in enhance soil resilience to waterlogging by developing continuous vertical pore networks and maintaining surface mulch, thereby improving climate adaptability in the black soil region of Northeast China.

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东北黑土（Mollisols）地区极端降雨期间长期免耕对内涝的缓解作用

极端降雨事件的日益频繁加剧了涝渍引起的作物曝气胁迫，凸显了适应性农业实践的紧迫性。通过11年的田间试验，比较了东北地区粉质粘土壤土长期免耕（NT）与传统板耕（MP）的内涝风险，评价了免耕（NT）在减轻内涝风险方面的潜力。采用降雨模拟（40 mm h−1）和染料示踪法研究土壤水分入渗动力学，采用x射线计算机断层扫描（CT）研究0 ~ 60 cm土层土壤孔隙特征及其对雨滴溅射的响应。结果表明，与MP相比，NT显著增强了水的入渗能力，最大入渗深度（MID）增加了161%，总染色面积（TSA）增加了65%，表面积水减少了95%。虽然MP在0 ~ 20 cm层具有更高的总孔隙度（εtotal）、宏观孔隙度（>；0.04 mm孔隙，ε x -射线）和孔隙连通性，但在0 ~ 60 cm剖面上，与NT相比，MP具有更少的生物孔隙和更大的宏观孔隙纵向分层。在降雨期间，MP地块的表层0.2 - 1.0 mm孔隙率减少了28%，0.2 mm孔隙率增加了19%，这可能是由于雨滴的飞溅，而NT地块通过秸秆覆盖保持了孔隙完整性。研究结果表明，长期NT通过形成连续的垂直孔隙网络和维持表层覆盖，有效增强了东北黑土区土壤的抗涝能力，从而提高了土壤的气候适应性。

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来源期刊

Geoderma 农林科学-土壤科学

CiteScore

11.80

自引率

6.60%

发文量

597

审稿时长

58 days

期刊介绍： Geoderma - the global journal of soil science - welcomes authors, readers and soil research from all parts of the world, encourages worldwide soil studies, and embraces all aspects of soil science and its associated pedagogy. The journal particularly welcomes interdisciplinary work focusing on dynamic soil processes and functions across space and time.