Mou Tingsen, Shen Haiou, He Yunfeng, et al. Effects of Ridge Tillage Patterns on Soil Erosion of Sloping Croplands in Black Soil Region of Northeastern China[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 22-30.
DOI:
Mou Tingsen, Shen Haiou, He Yunfeng, et al. Effects of Ridge Tillage Patterns on Soil Erosion of Sloping Croplands in Black Soil Region of Northeastern China[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 22-30. DOI: 10.13961/j.cnki.stbctb.2022.02.004.
Effects of Ridge Tillage Patterns on Soil Erosion of Sloping Croplands in Black Soil Region of Northeastern China
[Objective] The effects of ridge tillage patterns on soil erosion at sloping croplands in the black soil region of Northeastern China were analyzed in order to provide scientific guidance for soil erosion control in this region. [Methods] The simulated rainfall experiments were conducted at the sloping croplands with the 5° and 10° slope gradients. The simulated rainfall intensities were 50 and 100 mm/h. This study took the traditional up-and downslope ridge tillage as the control treatment. The ridge tillage patterns included contour ridge tillage
ridge-furrow intervals tillage
up and down slope ridge + bottom contour ridge tillage
and contour ridge + drainage ditch tillage. [Results] Under the experimental conditions
the contour ridge tillage
ridge-furrow intervals tillage
up and down slope ridge + bottom contour ridge tillage
and contour ridge + drainage ditch tillage effectively regulated runoff and decreased soil erosion
compared with control treatment. However
the regulation effect of different ridge tillage patterns on runoff and erosion decreased with the increase of rainfall intensity and slope gradient. For the 5° sloping cropland
the regulation effect of contour ridge tillage treatment on runoff and erosion was the best. The runoff rates and soil erosion rates were stable below 15.0 mm/h and 0.2 kg/(m2·h) . Under the rainfall intensity of the 50 and 100 mm/h
the runoff was reduced 92.3% and 83.9% respectively
and the soil erosion reduced 96.8% and 94.6% respectively
compared with the control treatments. The runoff reduction and soil erosion reduction benefits of ridge-furrow intervals tillage treatment was slightly greater than those of up and down slope ridge + bottom contour ridge tillage treatment at the 5° sloping cropland. For the 10° sloping cropland
the contour ridge tillage treatment showed better soil water storage and soil conservation capacity in the early stage of rainfall events compared with that of the other ridge tillage patterns. However
the ridges were easy to be damaged in the later stage of rainfall events
caused a rapid increase in soil erosion. In contrast
the contour ridge + drainage ditch tillage treatment could store soil and water in the early stage of rainfall events
and better drained away water in the later stage of rainfall events. [Conclusion] As to gentle sloping croplands
the contour ridge tillage and ridge-furrow intervals tillage patterns should be optimized
in the sloping farmland with steep slope
the contour ridge + drainage ditch tillage pattern should be preferred. Therefore
it is suggested to select suitable ridge tillage patterns according to slope gradients and rainfall characteristics.
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Runoff Recession and Surface Roughness on Cropland of Purple Soil
Benefits Assessment for Soil and Water Conservation Projects in Black Soil Region of Northeast China
Effects of Contour Hedgerow Intercropping on Surface Flow Control of Sloping Cropland
Morphological Characteristics and Influencing Factors of Gully Heads in a Typical Agricultural Watershed in Rolling-Hill Black Soil Region of Northeast China
Related Author
LIU Hong-hu
LIU Bao-yuan
YANG Xin
XU Pei
WANG Yu-kuan
FU Bin
LI Xu-feng
SONG Chun-yu
Related Institution
College of Geography and Remote Sense Science, Beijing Normal University,Key Laboratory of Environmental Change and Natural Disaster,Ministry of Education
Meteorological I nstitute of Shaanxi Province,Xian
Key Laboratory of Mountain Hazards and Earth Surface Process, Chinese Academy of Sciences
Institute of Mountain Hazards and Environment, Chinese Academy of Sciences
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences