Long-term straw return with moderate nitrogen levels reshapes soil bacterial communities in a vertisol
文献类型： 外文期刊
作者： Guo, Zichun 1 ; Qian, Rui 1 ; Li, Wei 4 ; Ding, Tianyu 1 ; Gao, Lei 1 ; Peng, Xinhua 6 ;
作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Peoples R China
2.Chinese Acad Sci, Key Lab Mollisols Agroecol, Northeast Inst Geog & Agroecol, Harbin, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Anhui Acad Agr Sci, Crop Res Inst, Hefei, Peoples R China
5.Univ Chinese Acad Sci, Nanjing, Peoples R China
6.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arable Land China, Beijing, Peoples R China
关键词： nitrogen fertilization; straw incorporation; soil microbial diversity; crop productivity; sustainable soil management
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：4.5； 五年影响因子：5.2 ）
ISSN：
年卷期： 2025 年 16 卷
页码：
收录情况： SCI
摘要： Introduction Incorporating straw into the soil is a sustainable practice that can mitigate some of the adverse effects of excessive N fertilization on soil structure degradation and microbial diversity reduction.Methods This objective of this study was to determine the combined effects of straw management (straw return and straw removal) and N fertilization (0, 360, 450, 540, 630, and 720 kg N ha-1 yr.-1) on crop yields, soil properties, and soil microbial communities in a long-term wheat-maize cropping system.Results and discussion The results showed that moderate N application (N450-N540) with straw return optimized wheat (283.5 kg ha-1) and maize (346.5 kg ha-1) yields, whereas higher N fertilization (N630, N720) led to soil acidification (pH decline of 0.51-1.67 units), irrespective of straw management. Straw return increased soil organic carbon (SOC), total nitrogen (TN), nitrate (NO3--N), and available potassium (AK), but decreased ammonium (NH4+-N). Bacterial diversity increased at moderate N rates but decreased at higher N rates. Fungal diversity was generally higher under straw removal, with Chaetomiaceae increasing under straw return, whereas Mortierellaceae and Trichocomaceae declined at high N levels. The Mantel test showed a strong correlation between soil pH and bacterial diversity, while fungal composition was influenced by SOC, TN, and NO3--N. Partial Least Squares Path Modeling (PLS-PM) demonstrated that N fertilization directly and indirectly increased wheat yield through improved soil properties, while straw return enhanced bacterial diversity, indirectly supported wheat yield. This study highlights the importance of balanced N fertilization and straw incorporation in maintaining bacterial community structure, fertility, and long-term crop productivity in intensive cropping systems on Vertisol.
- 相关文献
作者其他论文 更多>>
-
Host protein PRPS2 interact with the non-structural protein p17 of Avian Reovirus and promote viral replication
作者：Hu, Xiaomiao;Zhao, Ruihong;Pan, Xiaocheng;Dai, Yin;Li, Wei;Wu, Huimin;Wu, Yantao;Zhang, Chengcheng
关键词：Avian reovirus; p17 protein; PRPS2; Replication
-
The role of soil pore structure on nitrate release from soil organic matter and applied fertilizer under three fertilization regimes
作者：Ruan, Renjie;Zhang, Zhongbin;Peng, Xinhua;Ruan, Renjie;Zhang, Zhongbin;Lan, Ting;Wang, Yaosheng;Li, Wei;Chen, Huan
关键词：Soil pore structure; Nitrate release; Fertilization; Physical disturbance; X-ray computed tomography
-
Tobacco (Nicotiana tabacum) PSY peptides and their potential roles in seed germination, vegetative growth, and leaf senescence under osmotic stress
作者：Deng, Zhichao;Wu, Rongrong;Yang, Yalun;Liu, Tao;Li, Wei;Zhang, Zenglin;Guo, Yongfeng;Pan, Xiaolu;Yang, Yalun
关键词：PSY peptides; tobacco; secreted peptides; gene expression patterns; plant development; osmotic stress
-
Long-term straw return with nitrogen fertilization enhances soil pore structure, POM accumulation, and their positive feedback in a Vertisol
作者：Ding, Tianyu;Guo, Zichun;Peng, Xinhua;Li, Wei;Peng, Xinhua;Ding, Tianyu
关键词：Nitrogen fertilization; Particulate organic matter (POM); Pore structure; Straw incorporation; X-ray computed tomography (CT)
-
Interactions of nematodes and ammonia-oxidizing bacteria mediate nitrification in two contrasting soils
作者：Wan, Qing;Xu, Jianming;Li, Yong;Jin, Weiwei;Zhang, Jiabao;Chen, Lin;Ma, Donghao;Zhang, Jiabao;Li, Wei;Zhang, Shixiu
关键词：Ammonia oxidation; Bacterivorous nematodes; Soil pH; Cascading effect; Bottom-up regulation
-
Soil organic carbon trade-offs under conservation tillage: Carbon stock versus stability mediated by particulate and mineral-associated fractions
作者：Jiang, Rui;Peng, Xinhua;Jiang, Rui;Liu, Shuai;Guo, Zichun;Adingo, Samuel;Chen, Zengming;Gao, Lei;Jiang, Fahui;Chen, Zengming;Gao, Lei;Peng, Xinhua
关键词：Conservation tillage; Soil organic carbon stocks; Particulate organic carbon; Mineral-associated organic carbon; Soil organic carbon stability; Meta-analysis
-
Effects of legume-cover crop rotations on soil pore characteristics and particulate organic matter distributions in Vertisol based on X-ray computed tomography
作者：Ding, Tianyu;Guo, Zichun;Yu, Zizhou;Li, Jiaqi;Liu, Jianli;Ding, Tianyu;Yu, Zizhou;Liu, Jianli;Hua, Keke;Guo, Zhibin;Wang, Daozhong;Li, Jiaqi;Chen, Yueming;Peng, Xinhua
关键词：Cover crop rotations; Particulate organic matter; Soil pore structure; X-ray compute tomography; Vertisol; Soil physical properties
