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Sui PX, Luo Y, Zheng HB, Li RP, Wang H, Yuan Y, Zheng JY, Liu WR. Effects of long-term tillage practices on the stability of soil aggregates and organic carbon in black soil farmland. Ying Yong Sheng Tai Xue Bao 2023; 34:1853-1861. [PMID: 37694469 DOI: 10.13287/j.1001-9332.202307.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
We examined the effects of different tillage practices on plough layer soil structure and organic carbon stabilization in black soil farmland with a long-term positioning platform. The wet-sieving method and infrared spectroscopy method were used to investigate the impacts of conventional tillage (CT), no-tillage (NT), sub-soiling tillage (ST), and moldboard plowing tillage (MP) on soil aggregates distribution and organic carbon characteristics in 0-40 cm soil layers. Compared to CT, both NT and ST treatments significantly increased the proportion of large macroaggregates (>2 mm) in the topsoil layer (0-20 cm)and that of small macroaggregates (0.25-2 mm) in the subsoil layer (20-40 cm) for NT, ST, and MP. NT, ST, and MP treatments resulted in higher mean weight dia-meter (MWD) and mean geometric diameter (GMD) of soil aggregates in both the topsoil and subsoil layers. NT treatment improved organic carbon contents in bulk soil and large macroaggregates in the topsoil layer, while ST and MP enhanced organic carbon contents in bulk soil and large macroaggregates in the subsoil layer. The contribution rate of small macroaggregates organic carbon content to the total was between 68.9% and 83.4%. Furthermore, the organic carbon chemical stabilization of soil body and aggregates increased in the topsoil and subsoil layers under NT treatment compared to others. The MWD had a positive correlation with the organic carbon content and chemical stability of soil body and small macroaggregates. These findings offered a theoretical basis for understanding the impacts of different tillage practices on the stability of soil aggregate and organic carbon in black soil region.
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Affiliation(s)
- Peng-Xiang Sui
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System in Northeast China, Ministry of Agriculture and Rural Affairs, Changchun 130033, China
| | - Yang Luo
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System in Northeast China, Ministry of Agriculture and Rural Affairs, Changchun 130033, China
| | - Hong-Bing Zheng
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System in Northeast China, Ministry of Agriculture and Rural Affairs, Changchun 130033, China
| | - Rui-Ping Li
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System in Northeast China, Ministry of Agriculture and Rural Affairs, Changchun 130033, China
| | - Hao Wang
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System in Northeast China, Ministry of Agriculture and Rural Affairs, Changchun 130033, China
| | - Ye Yuan
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System in Northeast China, Ministry of Agriculture and Rural Affairs, Changchun 130033, China
| | - Jin-Yu Zheng
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System in Northeast China, Ministry of Agriculture and Rural Affairs, Changchun 130033, China
| | - Wu-Ren Liu
- Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences/Key Laboratory of Crop Ecophysiology and Farming System in Northeast China, Ministry of Agriculture and Rural Affairs, Changchun 130033, China
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