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- W4224995318 abstract "Abstract Aims The peanut ( Arachis hypogaea L . ) straw decomposition process was investigated to understand the determinant factors governing the decomposition rate and the nutrient release from straw. Methods A two-year field experiment was carried out with two factors: two irrigation regimes (without and with irrigation at wheat flowering stage) and three straw incorporation rates (3, 6, and 9 t ha -1 ). The filled nylon mesh bags with straw buried at 20 cm soil depth. The residual straw weight, nitrogen (N), phosphorus (P), and potassium (K) content were measured as nylon mesh bags were sampled. Results The decomposition dynamics of labile and intermediate pools were similar based on the 3-pool model analysis. Straw incorporation rate rather than irrigation regime controlled the decomposition process, which increased with incorporation rates. At the high incorporation rate, the released N, P, and K were approximately to 39%, 30%, and 87% of the required regional fertilizer input for winter wheat, respectively. Furthermore, the released N from straw decomposition was strongly related to the released K as indicated by the stoichiometry ratio. The random forest model predicted that temperature, precipitation, and initial straw nutrients were the main drivers for peanut straw decomposition, especially at the early stage. Conclusions We revealed the nutrient stoichiometry and release characteristics of in situ peanut straw decomposition, and found that incorporation rate exhibits a profound effect than irrigation on the decomposition process." @default.
- W4224995318 created "2022-04-28" @default.
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- W4224995318 date "2022-04-26" @default.
- W4224995318 modified "2023-10-16" @default.
- W4224995318 title "Straw decomposition: profound effect of incorporation than irrigation" @default.
- W4224995318 doi "https://doi.org/10.21203/rs.3.rs-1480580/v1" @default.
- W4224995318 hasPublicationYear "2022" @default.
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