Effects of Different Tillage Practices on Slope Erosion Characteristics of Peanut Field
Under three rainfall intensities (60–90–120 mm/h) and four tillage practices (longitudinal ridge tillage, cross ridge tillage, flat tillage and hole sowing), field experiments was conducted during the podding stage of peanuts to investigate the changes in hydrodynamic parameters and the erosion resp...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/10/2612 |
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| author | Xinlan Liang Ke Song Youheng Zhang Hongliang Huang Yong Wang Ying Cao |
| author_facet | Xinlan Liang Ke Song Youheng Zhang Hongliang Huang Yong Wang Ying Cao |
| author_sort | Xinlan Liang |
| collection | DOAJ |
| description | Under three rainfall intensities (60–90–120 mm/h) and four tillage practices (longitudinal ridge tillage, cross ridge tillage, flat tillage and hole sowing), field experiments was conducted during the podding stage of peanuts to investigate the changes in hydrodynamic parameters and the erosion response on purple soil slope cropland in order to reveal the soil and water conservation benefits of different tillage practices. The results showed that: (1) The sediment yield of the four tillage practices was ranked in descending order: longitudinal ridge tillage, flat tillage, hole sowing, and cross ridge tillage. Under the same rainfall intensity, there were no significant differences in runoff among these four tillage practices (<i>p</i> > 0.05), whereas sediment yield varied significantly. (2) The average flow velocity, Reynolds number, and Froude number of each treatment were positively correlated with rainfall intensity, while the resistance coefficient was negatively correlated. Flat tillage and cross ridge tillage were intermediate. The Reynolds number and Froude number of each treatment did not exceed the critical value and were generally within the laminar flow range, except for the longitudinal ridge tillage treatment at 120 mm/h rainfall intensity. (3) The sediment yield intensity on the slope was negatively correlated with the resistance coefficient, following a power function. The runoff shear stress and runoff power on each treatment were both positively correlated with sediment yield intensity in a linear manner. Compared to longitudinal ridge tillage, the other three tillage practices showed much better soil and water conservation benefits. Among them, cross ridge tillage exhibited the best water storage and soil conservation effects. In terms of hydraulics, longitudinal ridge tillage and flat tillage increased the erosive force required for sediment initiation and suppressed erosion occurrence. The research results were of great significance in revealing the characteristics of runoff erosion in purple soil areas and controlling tillage practices for soil erosion in purple soil areas. |
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| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T21:30:25Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
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| series | Agronomy |
| spelling | doaj.art-7ab22a8bdaca44b183be80a241aff3a02023-11-19T15:22:38ZengMDPI AGAgronomy2073-43952023-10-011310261210.3390/agronomy13102612Effects of Different Tillage Practices on Slope Erosion Characteristics of Peanut FieldXinlan Liang0Ke Song1Youheng Zhang2Hongliang Huang3Yong Wang4Ying Cao5College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an 625014, ChinaCollege of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an 625014, ChinaCollege of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an 625014, ChinaCollege of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an 625014, ChinaCollege of Forestry, Sichuan Agricultural University, Chengdu 611130, ChinaCollege of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an 625014, ChinaUnder three rainfall intensities (60–90–120 mm/h) and four tillage practices (longitudinal ridge tillage, cross ridge tillage, flat tillage and hole sowing), field experiments was conducted during the podding stage of peanuts to investigate the changes in hydrodynamic parameters and the erosion response on purple soil slope cropland in order to reveal the soil and water conservation benefits of different tillage practices. The results showed that: (1) The sediment yield of the four tillage practices was ranked in descending order: longitudinal ridge tillage, flat tillage, hole sowing, and cross ridge tillage. Under the same rainfall intensity, there were no significant differences in runoff among these four tillage practices (<i>p</i> > 0.05), whereas sediment yield varied significantly. (2) The average flow velocity, Reynolds number, and Froude number of each treatment were positively correlated with rainfall intensity, while the resistance coefficient was negatively correlated. Flat tillage and cross ridge tillage were intermediate. The Reynolds number and Froude number of each treatment did not exceed the critical value and were generally within the laminar flow range, except for the longitudinal ridge tillage treatment at 120 mm/h rainfall intensity. (3) The sediment yield intensity on the slope was negatively correlated with the resistance coefficient, following a power function. The runoff shear stress and runoff power on each treatment were both positively correlated with sediment yield intensity in a linear manner. Compared to longitudinal ridge tillage, the other three tillage practices showed much better soil and water conservation benefits. Among them, cross ridge tillage exhibited the best water storage and soil conservation effects. In terms of hydraulics, longitudinal ridge tillage and flat tillage increased the erosive force required for sediment initiation and suppressed erosion occurrence. The research results were of great significance in revealing the characteristics of runoff erosion in purple soil areas and controlling tillage practices for soil erosion in purple soil areas.https://www.mdpi.com/2073-4395/13/10/2612purple soilrunoff characteristics and sediment yieldhydrodynamic parametersSichuan BasinChina |
| spellingShingle | Xinlan Liang Ke Song Youheng Zhang Hongliang Huang Yong Wang Ying Cao Effects of Different Tillage Practices on Slope Erosion Characteristics of Peanut Field Agronomy purple soil runoff characteristics and sediment yield hydrodynamic parameters Sichuan Basin China |
| title | Effects of Different Tillage Practices on Slope Erosion Characteristics of Peanut Field |
| title_full | Effects of Different Tillage Practices on Slope Erosion Characteristics of Peanut Field |
| title_fullStr | Effects of Different Tillage Practices on Slope Erosion Characteristics of Peanut Field |
| title_full_unstemmed | Effects of Different Tillage Practices on Slope Erosion Characteristics of Peanut Field |
| title_short | Effects of Different Tillage Practices on Slope Erosion Characteristics of Peanut Field |
| title_sort | effects of different tillage practices on slope erosion characteristics of peanut field |
| topic | purple soil runoff characteristics and sediment yield hydrodynamic parameters Sichuan Basin China |
| url | https://www.mdpi.com/2073-4395/13/10/2612 |
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