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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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Location of the study area in Xingmu watershed.
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pone.0152313.g001: Location of the study area in Xingmu watershed.

Mentions: This research was conducted at the National Soil and Water Conservation Science and Technology Demonstration Park in Xingmu watershed, Dongliao County, Jilin Province, P. R. of China (E 125° 22' N, 42° 58'), Fig 1. The study area is located in low mountains and hills of the black soil regions of Northeast China. It can be considered as a cold temperate zone, semi-humid and continental monsoon climate. The annual average temperature is 5.2°C and the annual average precipitation is 658 mm, with 80% of the total rainfall occurring between June and August [25]. The major economic crop is maize. The main soils are black soils and brown soils. The soil chemical properties of the first 20 cm and the 20–40 cm of soils at the experimental site are introduced in Table 1. Due to serious soil erosion, the soil organic matter level of the study area was much less than the average level (more or less 20 g kg-1) in the Jilin Province.


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)

Location of the study area in Xingmu watershed.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0152313.g001: Location of the study area in Xingmu watershed.
Mentions: This research was conducted at the National Soil and Water Conservation Science and Technology Demonstration Park in Xingmu watershed, Dongliao County, Jilin Province, P. R. of China (E 125° 22' N, 42° 58'), Fig 1. The study area is located in low mountains and hills of the black soil regions of Northeast China. It can be considered as a cold temperate zone, semi-humid and continental monsoon climate. The annual average temperature is 5.2°C and the annual average precipitation is 658 mm, with 80% of the total rainfall occurring between June and August [25]. The major economic crop is maize. The main soils are black soils and brown soils. The soil chemical properties of the first 20 cm and the 20–40 cm of soils at the experimental site are introduced in Table 1. Due to serious soil erosion, the soil organic matter level of the study area was much less than the average level (more or less 20 g kg-1) in the Jilin Province.

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