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Ammoniated straw incorporation coupled with N management synergistically enhanced soil structure and crop productivity in a desert oasis farmland

文献类型：期刊论文

作者Zhou, Lifeng1,3; Chang, Wenlong1; Yang, Rong3; Feng, Hao2; Yang, Qiliang1
刊名LAND DEGRADATION & DEVELOPMENT
出版日期2023-08-07
页码13
关键词C N ratio land reclamation sandy soil soil structure straw ammonification
ISSN号1085-3278
DOI10.1002/ldr.4823
通讯作者Yang, Qiliang(lee86208@126.com)
英文摘要Straw return is the simplest and the most economic method to improve soil structure. Slow decomposition rate limits straw return in sandy fields, which has becoming one of the obstacles in sandy land reclamation. Ammonification of straw before return accelerates straw decomposition, but it requires the use of extra N fertilizer, however, little is known about N fertilizer management in fields with ammoniated straw incorporation. So, a 3-year field experiment was conducted with different proportions of N fertilizer aimed to maize straw ammonification and field broadcasting, and evaluated straw decomposition proportion, straw N release, soil organic carbon content, soil aggregates, soil water and N availability, and grain yield. Total N application rate was 300 kg per hectare, with five N input amounts for straw per hectare ammonification: 0 (SN0), 40 (SN40), 80 (SN80), 120 (SN120), and 160 (SN160) kg, and the rest of N broadcasted in soil during maize growing season. Ammonification accelerated straw decomposition and N release, and these effects showed no significant difference between SN80, SN120, and SN160. After straw decomposition for 150 days, the decomposition proportion was 62.1%, 53.0%, and 39.2% in SN80, SN40, and SN0, respectively. After 3 years of straw return, SN80 exhibited a significantly higher mean weight diameter of soil aggregates (35.6% higher), organic carbon content (18.4% higher), water-holding capacity (17.4% higher), and soil water storage (17.2% higher) than SN0. Additionally, SN80 and SN120 showed the most significant effect on "N slow-release" in soil. The above effects resulted with more available soil water and N used for crop growth, and increased grain yields (18.1% higher) and water use efficiency (18.6% higher) in SN80, compared with SN0. Hence, we conclude that a proper N allocation between straw and soil can synergistically enhance soil structure and crop productivity in sandy farmlands. This founding would provide scientific and technological support for straw return in sandy fields and is beneficial to sustainable development of oasis.
WOS关键词AGGREGATE STABILITY ; ORGANIC-CARBON ; AGRICULTURAL SOILS ; MICROBIAL BIOMASS ; DECOMPOSITION ; NITROGEN ; RESIDUE ; WATER ; DYNAMICS ; YIELD
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23060302] ; Yunnan Fundamental Research Projects[202201BE070001-023] ; Light of West China Program of the Chinese Academy of Sciences[E0290403]
WOS研究方向Environmental Sciences & Ecology ; Agriculture
语种英语
WOS记录号WOS:001043556600001
出版者WILEY
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Yunnan Fundamental Research Projects ; Light of West China Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/196167]  
专题中国科学院地理科学与资源研究所
通讯作者Yang, Qiliang
作者单位1.Kunming Univ Sci & Technol, Fac Modern Agr Engn, Kunming, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China
3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Linze Inland River Basin Res Stn, Chinese Ecosyst Res Network, Lanzhou, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Lifeng,Chang, Wenlong,Yang, Rong,et al. Ammoniated straw incorporation coupled with N management synergistically enhanced soil structure and crop productivity in a desert oasis farmland[J]. LAND DEGRADATION & DEVELOPMENT,2023:13.
APA Zhou, Lifeng,Chang, Wenlong,Yang, Rong,Feng, Hao,&Yang, Qiliang.(2023).Ammoniated straw incorporation coupled with N management synergistically enhanced soil structure and crop productivity in a desert oasis farmland.LAND DEGRADATION & DEVELOPMENT,13.
MLA Zhou, Lifeng,et al."Ammoniated straw incorporation coupled with N management synergistically enhanced soil structure and crop productivity in a desert oasis farmland".LAND DEGRADATION & DEVELOPMENT (2023):13.

入库方式： OAI收割

来源：地理科学与资源研究所

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