Synergistic Effects of Deep Rotary Tillage and Microbial Decomposition Agents on Straw Decomposition, Soil Nutrient Dynamics, and Microbial Communities in Rice Systems
This study evaluated the synergistic effects of microbial decomposition agents and deep rotary tillage on rice straw decomposition, soil nutrient dynamics, and microbial communities in paddy fields of southern China. A two-factor randomized block experiment was conducted, with straw decomposition dy...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/15/13/1447 |
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| author | Xinyue Wang Jie Huang Yanting Tan Lili Yang Yuanhuan Li Bing Xia Hailin Li Xiaohua Deng |
| author_facet | Xinyue Wang Jie Huang Yanting Tan Lili Yang Yuanhuan Li Bing Xia Hailin Li Xiaohua Deng |
| author_sort | Xinyue Wang |
| collection | DOAJ |
| description | This study evaluated the synergistic effects of microbial decomposition agents and deep rotary tillage on rice straw decomposition, soil nutrient dynamics, and microbial communities in paddy fields of southern China. A two-factor randomized block experiment was conducted, with straw decomposition dynamics modeled using a modified Olson decay model, and microbial communities were assessed via high-throughput sequencing and network analysis. The combined treatment significantly increased the decomposition rate constant, reduced the time for 50% decomposition to 81 days, and enhanced soil nutrient availability, especially total nitrogen, phosphorus, and potassium. Microbial richness, diversity, and network complexity were also improved. Structural equation modeling indicated that nutrient availability, rather than microbial α-diversity, was the main driver of decomposition processes. These findings suggest that integrating microbial agents with deep tillage offers an effective strategy for optimizing straw return, improving soil fertility, and enhancing microbial functional resilience in rice systems. |
| format | Article |
| id | doaj-art-def1e07921454988b143f208a1622ea3 |
| institution | Kabale University |
| issn | 2077-0472 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj-art-def1e07921454988b143f208a1622ea32025-08-20T03:28:29ZengMDPI AGAgriculture2077-04722025-07-011513144710.3390/agriculture15131447Synergistic Effects of Deep Rotary Tillage and Microbial Decomposition Agents on Straw Decomposition, Soil Nutrient Dynamics, and Microbial Communities in Rice SystemsXinyue Wang0Jie Huang1Yanting Tan2Lili Yang3Yuanhuan Li4Bing Xia5Hailin Li6Xiaohua Deng7College of Agriculture, Hunan Agricultural University, Changsha 410125, ChinaCollege of Agriculture, Hunan Agricultural University, Changsha 410125, ChinaCollege of Agriculture, Hunan Agricultural University, Changsha 410125, ChinaCollege of Plant Protection, Hunan Biological and Electromechanical Polytechnic, Changsha 410125, ChinaCollege of Plant Protection, Hunan Biological and Electromechanical Polytechnic, Changsha 410125, ChinaCollege of Agriculture, Hunan Agricultural University, Changsha 410125, ChinaCollege of Agriculture, Hunan Agricultural University, Changsha 410125, ChinaCollege of Agriculture, Hunan Agricultural University, Changsha 410125, ChinaThis study evaluated the synergistic effects of microbial decomposition agents and deep rotary tillage on rice straw decomposition, soil nutrient dynamics, and microbial communities in paddy fields of southern China. A two-factor randomized block experiment was conducted, with straw decomposition dynamics modeled using a modified Olson decay model, and microbial communities were assessed via high-throughput sequencing and network analysis. The combined treatment significantly increased the decomposition rate constant, reduced the time for 50% decomposition to 81 days, and enhanced soil nutrient availability, especially total nitrogen, phosphorus, and potassium. Microbial richness, diversity, and network complexity were also improved. Structural equation modeling indicated that nutrient availability, rather than microbial α-diversity, was the main driver of decomposition processes. These findings suggest that integrating microbial agents with deep tillage offers an effective strategy for optimizing straw return, improving soil fertility, and enhancing microbial functional resilience in rice systems.https://www.mdpi.com/2077-0472/15/13/1447straw decompositiondeep tillagemicrobial agentsoil nutrient dynamicssoil microbial community |
| spellingShingle | Xinyue Wang Jie Huang Yanting Tan Lili Yang Yuanhuan Li Bing Xia Hailin Li Xiaohua Deng Synergistic Effects of Deep Rotary Tillage and Microbial Decomposition Agents on Straw Decomposition, Soil Nutrient Dynamics, and Microbial Communities in Rice Systems Agriculture straw decomposition deep tillage microbial agent soil nutrient dynamics soil microbial community |
| title | Synergistic Effects of Deep Rotary Tillage and Microbial Decomposition Agents on Straw Decomposition, Soil Nutrient Dynamics, and Microbial Communities in Rice Systems |
| title_full | Synergistic Effects of Deep Rotary Tillage and Microbial Decomposition Agents on Straw Decomposition, Soil Nutrient Dynamics, and Microbial Communities in Rice Systems |
| title_fullStr | Synergistic Effects of Deep Rotary Tillage and Microbial Decomposition Agents on Straw Decomposition, Soil Nutrient Dynamics, and Microbial Communities in Rice Systems |
| title_full_unstemmed | Synergistic Effects of Deep Rotary Tillage and Microbial Decomposition Agents on Straw Decomposition, Soil Nutrient Dynamics, and Microbial Communities in Rice Systems |
| title_short | Synergistic Effects of Deep Rotary Tillage and Microbial Decomposition Agents on Straw Decomposition, Soil Nutrient Dynamics, and Microbial Communities in Rice Systems |
| title_sort | synergistic effects of deep rotary tillage and microbial decomposition agents on straw decomposition soil nutrient dynamics and microbial communities in rice systems |
| topic | straw decomposition deep tillage microbial agent soil nutrient dynamics soil microbial community |
| url | https://www.mdpi.com/2077-0472/15/13/1447 |
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