Soil greenhouse gases emission and nitrogen dynamics under maize straw incorporation and contrasting nitrogen fertilization

Soil greenhouse gases emission and nitrogen dynamics under maize straw incorporation and contrasting nitrogen fertilization | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Soil greenhouse gases emission and nitrogen dynamics under maize straw incorporation and contrasting nitrogen fertilization zhengyu Wang, Xuelian Wang, Jiaxin Shang, Rongqi Ye, Xiangyu Li, and 5 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4677083/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Background and aims Straw incorporation was widely accepted in the world for conservation agriculture, whereas the effects on greenhouse gases emissions (GHGs) and nitrogen dynamics under soils formed by long-term contrasting nitrogen (N) fertilizer are still unclear. Methodology An incubation experiment was conducted with or without maize straw using soils collected from fields study after 6-year contrasting N fertilization of 0 (low N), 187 (medium N) and 337 kg N ha − 1 (high N). Results Straw amendment significantly stimulated both N 2 O and CO 2 fluxes, and increased cumulative emission by 0.82 and 18.98 times than without straw incorporation on average, respectively. Medium N soil observably weakened N 2 O emission (23.76 µg kg − 1 ) than high N soil (162.71 µg kg − 1 ) and attenuated CO 2 emission (1.85 g kg − 1 ) than Low N soil (2.30 g kg − 1 ) soils with straw amendment. Soil NH 4 + -N and NO 3 − -N dynamics kept the increasing trend with rising soil N, whereas straw accelerated the decrease of NH 4 + -N from 24.72–78.98%, and reversed the tendency of NO 3 − -N from enrichment (+ 75.19%) to scarcity (-58.83%) compared to straw removal due to higher soil N fixation capacity. Moreover, partial least squares path modeling and random forest mean predictor importance disentangled straw affected GHGs by altering nitrogen turnover capacity. Conclusion Straw amendment promoted GHGs and enhanced mineral N turnover and diminished the risk of losses. Combing straw with medium N soil could mitigate greenhouse effect and improvement N and C balance in farming system compared to the low and high N soils. Straw management Soil nitrate dynamic Nitrogen turnover capacity Nitrous oxide Soil nitrogen balance Full Text Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4677083","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":327808755,"identity":"050b179a-71ff-41d9-a9c9-96f7399c8687","order_by":0,"name":"zhengyu 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fertilization","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Straw management, Soil nitrate dynamic, Nitrogen turnover capacity, Nitrous oxide, Soil nitrogen balance","lastPublishedDoi":"10.21203/rs.3.rs-4677083/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4677083/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003e\u003cb\u003eBackground and aims\u003c/b\u003e\u003c/p\u003e \u003cp\u003eStraw incorporation was widely accepted in the world for conservation agriculture, whereas the effects on greenhouse gases emissions (GHGs) and nitrogen dynamics under soils formed by long-term contrasting nitrogen (N) fertilizer are still unclear.\u003c/p\u003e\u003cp\u003e\u003cb\u003eMethodology\u003c/b\u003e\u003c/p\u003e \u003cp\u003eAn incubation experiment was conducted with or without maize straw using soils collected from fields study after 6-year contrasting N fertilization of 0 (low N), 187 (medium N) and 337 kg N ha\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e (high N).\u003c/p\u003e\u003cp\u003e\u003cb\u003eResults\u003c/b\u003e\u003c/p\u003e \u003cp\u003eStraw amendment significantly stimulated both N\u003csub\u003e2\u003c/sub\u003eO and CO\u003csub\u003e2\u003c/sub\u003e fluxes, and increased cumulative emission by 0.82 and 18.98 times than without straw incorporation on average, respectively. Medium N soil observably weakened N\u003csub\u003e2\u003c/sub\u003eO emission (23.76 \u0026micro;g kg\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e) than high N soil (162.71 \u0026micro;g kg\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e) and attenuated CO\u003csub\u003e2\u003c/sub\u003e emission (1.85 g kg\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e) than Low N soil (2.30 g kg\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e) soils with straw amendment. Soil NH\u003csub\u003e4\u003c/sub\u003e\u003csup\u003e+\u003c/sup\u003e-N and NO\u003csub\u003e3\u003c/sub\u003e\u003csup\u003e\u0026minus;\u003c/sup\u003e-N dynamics kept the increasing trend with rising soil N, whereas straw accelerated the decrease of NH\u003csub\u003e4\u003c/sub\u003e\u003csup\u003e+\u003c/sup\u003e-N from 24.72\u0026ndash;78.98%, and reversed the tendency of NO\u003csub\u003e3\u003c/sub\u003e\u003csup\u003e\u0026minus;\u003c/sup\u003e-N from enrichment (+\u0026thinsp;75.19%) to scarcity (-58.83%) compared to straw removal due to higher soil N fixation capacity. Moreover, partial least squares path modeling and random forest mean predictor importance disentangled straw affected GHGs by altering nitrogen turnover capacity.\u003c/p\u003e\u003cp\u003e\u003cb\u003eConclusion\u003c/b\u003e\u003c/p\u003e \u003cp\u003eStraw amendment promoted GHGs and enhanced mineral N turnover and diminished the risk of losses. Combing straw with medium N soil could mitigate greenhouse effect and improvement N and C balance in farming system compared to the low and high N soils.\u003c/p\u003e","manuscriptTitle":"Soil greenhouse gases emission and nitrogen dynamics under maize straw incorporation and contrasting nitrogen fertilization","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-08-09 21:04:47","doi":"10.21203/rs.3.rs-4677083/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"f4c909c4-5a9c-4e75-84d5-77309963050d","owner":[],"postedDate":"August 9th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2024-10-18T09:46:37+00:00","versionOfRecord":[],"versionCreatedAt":"2024-08-09 21:04:47","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4677083","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4677083","identity":"rs-4677083","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}