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Assessment of Micro-Basin Tillage as a Soil and Water Conservation Practice in the Black Soil Region of Northeast China.

Sui Y, Ou Y, Yan B, Xu X, Rousseau AN, Zhang Y - PLoS ONE (2016)

Bottom Line: Results indicated that when compared to the up-down slope tillage, micro-basin tillage could increase soil water content and maize yield by about 45% and 17%, and reduce runoff, sediment and nutrients loads by about 63%, 96% and 86%, respectively.Compared with treatments of other block intervals, the optimal block interval treatments increased soil moisture by around 10% and reduced runoff rate by around 15%.In general, micro-basin tillage with optimal block interval represents an effective soil and water conservation practice for sloping farmland of the black soil region.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.

ABSTRACT
Micro-basin tillage is a soil and water conservation practice that requires building individual earth blocks along furrows. In this study, plot experiments were conducted to assess the efficiency of micro-basin tillage on sloping croplands between 2012 and 2013 (5°and 7°). The conceptual, optimal, block interval model was used to design micro-basins which are meant to capture the maximum amount of water per unit area. Results indicated that when compared to the up-down slope tillage, micro-basin tillage could increase soil water content and maize yield by about 45% and 17%, and reduce runoff, sediment and nutrients loads by about 63%, 96% and 86%, respectively. Meanwhile, micro-basin tillage could reduce the peak runoff rates and delay the initial runoff-yielding time. In addition, micro-basin tillage with the optimal block interval proved to be the best one among all treatments with different intervals. Compared with treatments of other block intervals, the optimal block interval treatments increased soil moisture by around 10% and reduced runoff rate by around 15%. In general, micro-basin tillage with optimal block interval represents an effective soil and water conservation practice for sloping farmland of the black soil region.

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Runoff of the different treatment plots under two sloping land gradients.Note: Different levels (a, b, c and d) presented within the same month show that the values were significantly different at the 5% probability level. Error bars represent one standard deviation.
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pone.0152313.g006: Runoff of the different treatment plots under two sloping land gradients.Note: Different levels (a, b, c and d) presented within the same month show that the values were significantly different at the 5% probability level. Error bars represent one standard deviation.

Mentions: Fig 6 indicates that in 2012 and 2013, micro-basin tillage mitigated on average runoff by 61% and 64%, respectively. In 2012, micro-basins with 75-cm block space (5°-slope) had the least amount of runoff, which were 7 mm, 25 mm and 12 mm from June to August, respectively. While compared with the control, micro-basin tillage with different block spaces reduced runoff by 69% to 71% (75-cm block space), 56% to 59% (65-cm block space) and 55% to 58% (85-cm block space). According to ANOVA results introduced in Fig 6, the differences in runoff between control and three micro-basin tillage plots were significant (df = 11, F = 147.45, p < 0.01 for June; df = 11, F = 904.07, p < 0.01 for July; and df = 11, F = 318.46, p < 0.01 for August); in addition, the differences in runoff between 75-cm block space and the other two block spaces were also significant (p < 0.01 for June, July and August); however, the differences between treatments of 65-cm and 85-cm block spaces were not significant all the time (p >0.10 for June, July and August).


Assessment of Micro-Basin Tillage as a Soil and Water Conservation Practice in the Black Soil Region of Northeast China.

Sui Y, Ou Y, Yan B, Xu X, Rousseau AN, Zhang Y - PLoS ONE (2016)

Runoff of the different treatment plots under two sloping land gradients.Note: Different levels (a, b, c and d) presented within the same month show that the values were significantly different at the 5% probability level. Error bars represent one standard deviation.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4816346&req=5

pone.0152313.g006: Runoff of the different treatment plots under two sloping land gradients.Note: Different levels (a, b, c and d) presented within the same month show that the values were significantly different at the 5% probability level. Error bars represent one standard deviation.
Mentions: Fig 6 indicates that in 2012 and 2013, micro-basin tillage mitigated on average runoff by 61% and 64%, respectively. In 2012, micro-basins with 75-cm block space (5°-slope) had the least amount of runoff, which were 7 mm, 25 mm and 12 mm from June to August, respectively. While compared with the control, micro-basin tillage with different block spaces reduced runoff by 69% to 71% (75-cm block space), 56% to 59% (65-cm block space) and 55% to 58% (85-cm block space). According to ANOVA results introduced in Fig 6, the differences in runoff between control and three micro-basin tillage plots were significant (df = 11, F = 147.45, p < 0.01 for June; df = 11, F = 904.07, p < 0.01 for July; and df = 11, F = 318.46, p < 0.01 for August); in addition, the differences in runoff between 75-cm block space and the other two block spaces were also significant (p < 0.01 for June, July and August); however, the differences between treatments of 65-cm and 85-cm block spaces were not significant all the time (p >0.10 for June, July and August).

Bottom Line: Results indicated that when compared to the up-down slope tillage, micro-basin tillage could increase soil water content and maize yield by about 45% and 17%, and reduce runoff, sediment and nutrients loads by about 63%, 96% and 86%, respectively.Compared with treatments of other block intervals, the optimal block interval treatments increased soil moisture by around 10% and reduced runoff rate by around 15%.In general, micro-basin tillage with optimal block interval represents an effective soil and water conservation practice for sloping farmland of the black soil region.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.

ABSTRACT
Micro-basin tillage is a soil and water conservation practice that requires building individual earth blocks along furrows. In this study, plot experiments were conducted to assess the efficiency of micro-basin tillage on sloping croplands between 2012 and 2013 (5°and 7°). The conceptual, optimal, block interval model was used to design micro-basins which are meant to capture the maximum amount of water per unit area. Results indicated that when compared to the up-down slope tillage, micro-basin tillage could increase soil water content and maize yield by about 45% and 17%, and reduce runoff, sediment and nutrients loads by about 63%, 96% and 86%, respectively. Meanwhile, micro-basin tillage could reduce the peak runoff rates and delay the initial runoff-yielding time. In addition, micro-basin tillage with the optimal block interval proved to be the best one among all treatments with different intervals. Compared with treatments of other block intervals, the optimal block interval treatments increased soil moisture by around 10% and reduced runoff rate by around 15%. In general, micro-basin tillage with optimal block interval represents an effective soil and water conservation practice for sloping farmland of the black soil region.

Show MeSH