Straw Returning With No‐Tillage Alleviates Microbial Metabolic Carbon Limitation and Improves Soil Multifunctionality in the Northeast Plain

Bibliographic Data

ID21648934
AuthorsJuncong Chu (State Key Laboratory of Maize Bio‐Breeding, College of Agronomy and Biotechnology China Agricultural University Beijing China), Lihong Wang (0009-0002-7085-301X, College of Agronomy Hebei Agricultural University Baoding China), Rong Jia (0000-0002-5306-5241, State Key Laboratory of Maize Bio‐Breeding, College of Agronomy and Biotechnology China Agricultural University Beijing China), Jie Zhou (0000-0003-2319-8673, College of Agriculture Nanjing Agricultural University Nanjing China), Huadong Zang (0000-0002-2008-143X, State Key Laboratory of Maize Bio‐Breeding, College of Agronomy and Biotechnology China Agricultural University Beijing China), Junhe Wang (Qiqihar sub‐Academy of Heilongjiang Academy of Agricultural Sciences Qiqihar China), Yadong Yang (0009-0004-4810-0606, State Key Laboratory of Maize Bio‐Breeding, College of Agronomy and Biotechnology China Agricultural University Beijing China), Ying Jiang (0000-0002-6128-6626, College of Agronomy Shenyang Agricultural University Shenyang China), Yuxian Wang (0000-0003-4553-9272, Qiqihar sub‐Academy of Heilongjiang Academy of Agricultural Sciences Qiqihar China), Leanne Peixoto (0000-0002-8081-0569, Department of Agroecology Aarhus University Tjele Denmark), Zhaohai Zeng (0000-0002-5262-9367, State Key Laboratory of Maize Bio‐Breeding, College of Agronomy and Biotechnology China Agricultural University Beijing China, corresponding author)
Year2024
Volume35
Issue17
Pages5149-5161
Publication date2024-11-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueLand Degradation and Development (JOURNAL)
Journal identifiersISSN: 1085-3278 • E-ISSN: 1099-145X
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ldr.5286
OpenAlexW4402338939
LanguageEN
References cited96

Straw returning has been broadly recognized as an agronomic strategy to manage soil quality and has great potential to enhance soil fertility. However, soil microbial metabolism and ecosystem multifunctionality in response to various straw returning strategies in the black soil remain poorly understood. Here, a 5‐year field trial was conducted to discover the effects of four straw management strategies (SIDP, straw incorporation by deep ploughing; SIRT, straw incorporation by rotary tillage; SM, straw mulching with no‐tillage; SR, straw removal with no‐tillage) on the soil biochemical properties in the topsoil (0–20 cm) and subsoil (20–40 cm). SM maintained soil fertility, as evidenced by increases in soil organic carbon, total nitrogen, dissolved organic carbon, and nitrogen, compared with SIDP and SR. Additionally, this strategy promoted microbial biomass. It also stimulated nutrient cycling through increased enzyme activity. Meanwhile, SM alleviated microbial carbon limitation and promoted the shift of soil microbial metabolism from P limitation to N limitation compared to other treatments, especially in the subsoil. This shift was directly influenced by soil available nutrients and microbial properties, as revealed by the partial least‐squares path modeling analysis. Besides, SM promoted soil ecosystem multifunctionality by 29%–37% in both soil layers compared to SIDP and SR. Random forest analysis indicated that soil microbial biomass and activity were the main drivers of this increase in multifunctionality. In conclusion, straw returning with no‐tillage is an optimal straw management strategy for improving the soil biochemical properties, stimulating enzyme activities, alleviating microbial carbon limitation, and increasing ecosystem multifunctionality in the Northeast Plain

Agronomy · Biology · Carbon fibers · Coastal plain · Soil carbon · Soil water · Straw · Tillage · Bioenergy crop production and management · Environmental Science · Legume Nitrogen Fixing Symbiosis · Materials Science · Soil Carbon and Nitrogen Dynamics · Geology · Soil Science

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