Show simple item record

dc.contributorYuan, Jinchuanen_US
dc.contributorGao, Simanen_US
dc.contributorLi, Tongen_US
dc.contributorLi, Yajunen_US
dc.contributorNangia, Vinayen_US
dc.contributorMo, Feien_US
dc.contributorLiao, Yunchengen_US
dc.contributorWen, Xiaoxiaen_US
dc.creatorWang, Weiyanen_US
dc.identifier.citationWeiyan Wang, Jinchuan Yuan, Siman Gao, Tong Li, Yajun Li, Vinay Nangia, Fei Mo, Yuncheng Liao, Xiaoxia Wen. (17/7/2020). Conservation tillage enhances crop productivity and decreases soil nitrogen losses in a rainfed agroecosystem of the Loess Plateau, China. Journal of Cleaner Production, 274, pp. 1-12.en_US
dc.description.abstractConservation tillage has been recommended as one of the effective soil management practices for mitigating the negative environmental effects of synthetic ammonia application and hence achieving cleaner agricultural production. However, information about how long-term conservation tillage affects agroecosystem nitrogen balance in dryland winter wheat-summer maize cropping is limited. Based on a long-term (>9 yr) field tillage experiment and in-situ observation, we assessed the effects of different tillage practices (i.e., chisel plough tillage (CPT), zero tillage (ZT), and conventional ploughing tillage (PT)) on soil nitrogen balance and crop productivity in the 2016e2017 and 2017e2018 growing seasons. Each tillage practice was exposed to a local widely adopted N application rate (240 kg ha 1 yr 1) in both seasons. Our results indicated that, compared with PT, CPT and ZT significantly (P < 0.05) reduced N2O emissions by 39.7% (2.8 kg N ha 1 yr 1) and 55.3% (3.9 kg N ha 1 yr 1), and N leaching by 52.3% (11.8 kg N ha 1 yr 1) and 147.7% (33.3 kg N ha 1 yr 1) across the two growing seasons, respectively. CPT significantly enhanced crop aboveground N uptake by 4.0%, and increased the annual crop yield by 5.9 e8.1% (0.8e1.2 t ha 1 yr 1). Although CPT and ZT enhanced NH3 volatilization by 46.7% (14.6 kg N ha 1 yr 1) and 84.3% (26.3 kg N ha 1 yr 1), the total N losses under CPT and ZT were decreased on an average by 7.4% and 22.4%, respectively. Overall, CPT and ZT significantly increased the accumulation of soil total nitrogen in the 0e100 cm layer by 34.8 and 54.1 kg N ha 1 yr 1, respectively. Taking N inputs and outputs together, CPT achieved a lower N surplus mainly due to increased crop N harvest and reduced N losses including gaseous emissions and hydrological leaching. Our findings suggest that longterm chisel plough tillage in dryland agroecosystems could serve as a promising soil management practice in increasing crop productivity and maintaining sustainability through enhancing N removal from crop biomass and decreasing N losses via N2O emission and nitrate-N leaching.en_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceJournal of Cleaner Production;274,(2020) Pagination 1,12en_US
dc.subjectn lossen_US
dc.subjectcleaner productionen_US
dc.titleConservation tillage enhances crop productivity and decreases soil nitrogen losses in a rainfed agroecosystem of the Loess Plateau, Chinaen_US
dc.typeJournal Articleen_US
cg.creator.idNangia, Vinay: 0000-0001-5148-8614en_US
cg.subject.agrovocconservation tillageen_US
cg.subject.agrovocnitrogen balanceen_US
cg.contributor.centerNorthwest A&F University, College of Agronomy - NWSUAF - CoAen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.crpCGIAR Research Program on Climate Change, Agriculture and Food Security - CCAFSen_US
cg.contributor.funderGovernment of Chinaen_US
cg.contributor.projectChina Bilateral Program 2020 -2021 Implementation Fundingen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionEastern Asiaen_US
dc.identifier.statusTimeless limited accessen_US

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

DSpace software copyright © 2002-2016  DuraSpace
MELSpace content providers and partners accept no liability to any consequence resulting from use of the content or data made available in this repository. Users of this content assume full responsibility for compliance with all relevant national or international regulations and legislation.
Theme by 
Atmire NV