Effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soil
【Objective】Red soil in Southern China is typically deficient in structure and nutrients. Amending it with straw has been proposed as a method to improve its structure and fertility. This study experimentally examines the effects of different straw incorporation methods on the physicochemical propert...
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Science Press
2025-03-01
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| Series: | Guan'gai paishui xuebao |
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| Online Access: | https://www.ggpsxb.com/jgpxxben/ch/reader/view_abstract.aspx?file_no=20250308&flag=1 |
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| _version_ | 1849345313138016256 |
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| author | CHEN Yuni SHENG Feng |
| author_facet | CHEN Yuni SHENG Feng |
| author_sort | CHEN Yuni |
| collection | DOAJ |
| description | 【Objective】Red soil in Southern China is typically deficient in structure and nutrients. Amending it with straw has been proposed as a method to improve its structure and fertility. This study experimentally examines the effects of different straw incorporation methods on the physicochemical properties of red soil, as well as nutrient leaching.【Method】The experiment was conducted using columns, where soils were repacked into columns and amended with crushed straw, straw powder, or straw ash. The control was soil without amendment. The columns were then subjected to leaching. At the end of the experiment, the physicochemical properties of the soil in each column were measured.【Result】Regardless of the type of straw, amending the soil with it reduced bulk density, increased total porosity and capillary porosity, enhanced soil organic matter, and increased most nutrients, while reducing nutrient leaching. Amending soil with crushed straw was most effective in increasing capillary porosity and reducing nitrate (NO- 3-N) leaching, as well as minimizing the losses of ammonium (NH+ 4-N) and total nitrogen (N). In contrast, amending the soil with straw powder was most effective in increasing soil ammonia nitrogen and available potassium content, while reducing the losses of total nitrogen and total phosphorus, and improving the stability of soil aggregates. Amending the soil with straw ash was most effective in increasing total soil porosity, soil organic matter, available phosphorus, and reducing total losses of nitrate (NO- 3-N), total phosphorus (P), and ammonium (NH+ 4-N). However, producing straw ash is environmentally unfriendly.【Conclusion】Among the three types of straw, amending soil with straw powder was the most effective in improving soil structure and the physicochemical properties of red soil. This method can be used as an improved agronomic technology to enhance the productivity of red soils. |
| format | Article |
| id | doaj-art-62027f3099d846ffb33c2e7285b4ce5d |
| institution | Kabale University |
| issn | 1672-3317 |
| language | zho |
| publishDate | 2025-03-01 |
| publisher | Science Press |
| record_format | Article |
| series | Guan'gai paishui xuebao |
| spelling | doaj-art-62027f3099d846ffb33c2e7285b4ce5d2025-08-20T03:42:30ZzhoScience PressGuan'gai paishui xuebao1672-33172025-03-01443707610.13522/j.cnki.ggps.2024283Effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soilCHEN Yuni0SHENG Feng11. School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, China; 2. Key Laboratory of Dongting Lake Water Environment Treatment and Ecological Restoration, Changsha 410114, China1. School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha 410114, China;3. Key Laboratory of Water and Sediment Sciences, Flood and Drought Disaster Prevention Key Laboratory of Hunan Province, Changsha 410114, China【Objective】Red soil in Southern China is typically deficient in structure and nutrients. Amending it with straw has been proposed as a method to improve its structure and fertility. This study experimentally examines the effects of different straw incorporation methods on the physicochemical properties of red soil, as well as nutrient leaching.【Method】The experiment was conducted using columns, where soils were repacked into columns and amended with crushed straw, straw powder, or straw ash. The control was soil without amendment. The columns were then subjected to leaching. At the end of the experiment, the physicochemical properties of the soil in each column were measured.【Result】Regardless of the type of straw, amending the soil with it reduced bulk density, increased total porosity and capillary porosity, enhanced soil organic matter, and increased most nutrients, while reducing nutrient leaching. Amending soil with crushed straw was most effective in increasing capillary porosity and reducing nitrate (NO- 3-N) leaching, as well as minimizing the losses of ammonium (NH+ 4-N) and total nitrogen (N). In contrast, amending the soil with straw powder was most effective in increasing soil ammonia nitrogen and available potassium content, while reducing the losses of total nitrogen and total phosphorus, and improving the stability of soil aggregates. Amending the soil with straw ash was most effective in increasing total soil porosity, soil organic matter, available phosphorus, and reducing total losses of nitrate (NO- 3-N), total phosphorus (P), and ammonium (NH+ 4-N). However, producing straw ash is environmentally unfriendly.【Conclusion】Among the three types of straw, amending soil with straw powder was the most effective in improving soil structure and the physicochemical properties of red soil. This method can be used as an improved agronomic technology to enhance the productivity of red soils.https://www.ggpsxb.com/jgpxxben/ch/reader/view_abstract.aspx?file_no=20250308&flag=1red soil; straw returning; aggregate stability; nutrient leaching |
| spellingShingle | CHEN Yuni SHENG Feng Effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soil Guan'gai paishui xuebao red soil; straw returning; aggregate stability; nutrient leaching |
| title | Effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soil |
| title_full | Effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soil |
| title_fullStr | Effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soil |
| title_full_unstemmed | Effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soil |
| title_short | Effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soil |
| title_sort | effects of various straw incorporation methods on the physicochemical properties and nutrient leaching of red soil |
| topic | red soil; straw returning; aggregate stability; nutrient leaching |
| url | https://www.ggpsxb.com/jgpxxben/ch/reader/view_abstract.aspx?file_no=20250308&flag=1 |
| work_keys_str_mv | AT chenyuni effectsofvariousstrawincorporationmethodsonthephysicochemicalpropertiesandnutrientleachingofredsoil AT shengfeng effectsofvariousstrawincorporationmethodsonthephysicochemicalpropertiesandnutrientleachingofredsoil |