2021
DOI: 10.1002/agj2.20582
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Long‐term effects of straw mulching coupled with N application on soil organic carbon sequestration and soil aggregation in a winter wheat monoculture system

Abstract: Straw mulching can be affected by N fertilization rate with regard to improving soil organic carbon (SOC) lability, which modifies the net accumulation of SOC and soil aggregation. We conducted a 14-yr field experiment to determine how straw mulching coupled with N application rates affects crop yield, SOC sequestration as a net gain of SOC, and soil aggregation in a winter wheat (Triticum aestivum L.) monoculture system. Six combinations of two cultivation practices, conventional cultivation (CC) and straw mu… Show more

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Cited by 12 publications
(3 citation statements)
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“…Moreover, the reduction in MBC content in this study was accompanied by an increase in qCO 2 , which resulted in lower values of qMic. This information reinforces the suggestion that the reduction in MBC content in all crops occurred due to an increase in energy consumption by microbial communities for biological maintenance [2,7,9,23,28]. Higher qCO 2 values highlight environments with a less stable microbiota [18]; therefore, the ecophysiological state of the microbial community is unbalanced [24].…”
Section: Discussionsupporting
confidence: 82%
See 1 more Smart Citation
“…Moreover, the reduction in MBC content in this study was accompanied by an increase in qCO 2 , which resulted in lower values of qMic. This information reinforces the suggestion that the reduction in MBC content in all crops occurred due to an increase in energy consumption by microbial communities for biological maintenance [2,7,9,23,28]. Higher qCO 2 values highlight environments with a less stable microbiota [18]; therefore, the ecophysiological state of the microbial community is unbalanced [24].…”
Section: Discussionsupporting
confidence: 82%
“…In terms of nutrient cycling, both the amount of plant residue on the soil surface and the availability and lability of nutrients such as carbon and nitrogen in the soil are strongly influenced by nitrogen fertilization [9]. In addition to this, the high demand for nitrogen from maize and tropical grasses for development and productivity highlights the importance of adequately supplying nitrogen in intercropping systems [8].…”
Section: Introductionmentioning
confidence: 99%
“…Additionally, MBC in this study was significantly lower under 1/3OF + 2/3NF treatment than that under NF, and no significant difference was shown in DOC between 1/3OF + 2/3NF and NF. These results were not consistent with previous studies [55,56]. For example, Xu et al [21] and Lou et al [54] proposed that MBC and DOC in chemical fertilizer combined with organic fertilizer were significantly higher than those in NPK treatment.…”
Section: Effects Of Different N Fertilizer Applications On Toc and La...contrasting
confidence: 84%