Impact of Integrated Rice-Crayfish Farming on Soil Aggregates and Organic Matter Distribution
This study evaluates the effects of a combined rice-crayfish farming model and compares this model with traditional paddy fields. The focus is on soil aggregate characteristics, organic matter content, and also the distribution of soil aggregates. This research was conducted in Qianjiang, Hubei Prov...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/14/1/16 |
| _version_ | 1827372968382038016 |
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| author | Tianqi Lv Caiyun Wang Yueling Xu Xueyan Zhou Fan Huang Lei Yu |
| author_facet | Tianqi Lv Caiyun Wang Yueling Xu Xueyan Zhou Fan Huang Lei Yu |
| author_sort | Tianqi Lv |
| collection | DOAJ |
| description | This study evaluates the effects of a combined rice-crayfish farming model and compares this model with traditional paddy fields. The focus is on soil aggregate characteristics, organic matter content, and also the distribution of soil aggregates. This research was conducted in Qianjiang, Hubei Province. The surface soil samples were collected from two types of arable land: paddy fields (WR) and rice-crayfish fields (CR). We performed an analysis of soil aggregate distribution and organic matter content. Results reveal that the majority of soil aggregates exceed 2 mm in size (≥74.94%). The integrated rice-crayfish farming model significantly enhances the presence of large soil aggregates. And these parameters such as the average weight diameter (MWD), average geometric diameter (GWD), and agglomerate stability (PAD) also increase. Moreover, it mitigates agglomerate fragmentation (WASR). However, the net increase in total soil organic matter due to the integrated farming model remains modest. Organic matter content within the agglomerates follows an initial increase followed by a decrease. The highest content occurs in the 0.25–0.5 mm grain size (D4). When examining the distribution of soil aggregates and organic matter, it becomes evident that organic matter primarily originates from grain sizes larger than 2 mm (≥71.92%). Notably, the rice-crayfish paddy field (CR) exhibits a substantially higher contribution compared to the traditional rice paddy field (WR). This study demonstrates several positive outcomes of the integrated rice-crayfish farming model compared to traditional paddy farming. It promotes the development of larger soil aggregates, enhances the structural integrity of soil aggregates, and improves their mechanical and hydrological stability. Additionally, it marginally increases the organic matter content within each component of soil aggregates. Furthermore, integrated modelling increases the impact of larger soil aggregates on soil organic matter. This improves the quality of the soil and as a result, crop yields are increased. The health of the soil is also improved and this contributes positively to food security. |
| first_indexed | 2024-03-08T11:09:56Z |
| format | Article |
| id | doaj.art-f95cfb184d394c718e3cfe261a4ad33c |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-08T11:09:56Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-f95cfb184d394c718e3cfe261a4ad33c2024-01-26T14:20:59ZengMDPI AGAgronomy2073-43952023-12-011411610.3390/agronomy14010016Impact of Integrated Rice-Crayfish Farming on Soil Aggregates and Organic Matter DistributionTianqi Lv0Caiyun Wang1Yueling Xu2Xueyan Zhou3Fan Huang4Lei Yu5Key Laboratory for Geographical Process Analysis and Simulation of Hubei Province, Central China Normal University, Wuhan 430079, ChinaKey Laboratory for Geographical Process Analysis and Simulation of Hubei Province, Central China Normal University, Wuhan 430079, ChinaKey Laboratory for Geographical Process Analysis and Simulation of Hubei Province, Central China Normal University, Wuhan 430079, ChinaKey Laboratory for Geographical Process Analysis and Simulation of Hubei Province, Central China Normal University, Wuhan 430079, ChinaKey Laboratory for Geographical Process Analysis and Simulation of Hubei Province, Central China Normal University, Wuhan 430079, ChinaKey Laboratory for Geographical Process Analysis and Simulation of Hubei Province, Central China Normal University, Wuhan 430079, ChinaThis study evaluates the effects of a combined rice-crayfish farming model and compares this model with traditional paddy fields. The focus is on soil aggregate characteristics, organic matter content, and also the distribution of soil aggregates. This research was conducted in Qianjiang, Hubei Province. The surface soil samples were collected from two types of arable land: paddy fields (WR) and rice-crayfish fields (CR). We performed an analysis of soil aggregate distribution and organic matter content. Results reveal that the majority of soil aggregates exceed 2 mm in size (≥74.94%). The integrated rice-crayfish farming model significantly enhances the presence of large soil aggregates. And these parameters such as the average weight diameter (MWD), average geometric diameter (GWD), and agglomerate stability (PAD) also increase. Moreover, it mitigates agglomerate fragmentation (WASR). However, the net increase in total soil organic matter due to the integrated farming model remains modest. Organic matter content within the agglomerates follows an initial increase followed by a decrease. The highest content occurs in the 0.25–0.5 mm grain size (D4). When examining the distribution of soil aggregates and organic matter, it becomes evident that organic matter primarily originates from grain sizes larger than 2 mm (≥71.92%). Notably, the rice-crayfish paddy field (CR) exhibits a substantially higher contribution compared to the traditional rice paddy field (WR). This study demonstrates several positive outcomes of the integrated rice-crayfish farming model compared to traditional paddy farming. It promotes the development of larger soil aggregates, enhances the structural integrity of soil aggregates, and improves their mechanical and hydrological stability. Additionally, it marginally increases the organic matter content within each component of soil aggregates. Furthermore, integrated modelling increases the impact of larger soil aggregates on soil organic matter. This improves the quality of the soil and as a result, crop yields are increased. The health of the soil is also improved and this contributes positively to food security.https://www.mdpi.com/2073-4395/14/1/16soil aggregatessoil organic matterpaddy fieldsrice-crayfish fields |
| spellingShingle | Tianqi Lv Caiyun Wang Yueling Xu Xueyan Zhou Fan Huang Lei Yu Impact of Integrated Rice-Crayfish Farming on Soil Aggregates and Organic Matter Distribution Agronomy soil aggregates soil organic matter paddy fields rice-crayfish fields |
| title | Impact of Integrated Rice-Crayfish Farming on Soil Aggregates and Organic Matter Distribution |
| title_full | Impact of Integrated Rice-Crayfish Farming on Soil Aggregates and Organic Matter Distribution |
| title_fullStr | Impact of Integrated Rice-Crayfish Farming on Soil Aggregates and Organic Matter Distribution |
| title_full_unstemmed | Impact of Integrated Rice-Crayfish Farming on Soil Aggregates and Organic Matter Distribution |
| title_short | Impact of Integrated Rice-Crayfish Farming on Soil Aggregates and Organic Matter Distribution |
| title_sort | impact of integrated rice crayfish farming on soil aggregates and organic matter distribution |
| topic | soil aggregates soil organic matter paddy fields rice-crayfish fields |
| url | https://www.mdpi.com/2073-4395/14/1/16 |
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