REN Yuzhi, ZHENG Jiangkun, FU Yan, et al. Characteristics of Runoff and Sediment Yield in Purple Soil Sloping Farmland Under Different Tillage Patterns in Suining Formation[J]. 2019, 33(2): 30-38.
DOI:
REN Yuzhi, ZHENG Jiangkun, FU Yan, et al. Characteristics of Runoff and Sediment Yield in Purple Soil Sloping Farmland Under Different Tillage Patterns in Suining Formation[J]. 2019, 33(2): 30-38. DOI: 10.13870/j.cnki.stbcxb.2019.02.005.
Characteristics of Runoff and Sediment Yield in Purple Soil Sloping Farmland Under Different Tillage Patterns in Suining Formation
Based on the rainfall data from 1989 to 2016 in Suining Soil and Water Conservation Experimental Station
four rainfall patterns were classified
which were rainfall pattern Ⅰ (long duration and light rainfall intensity)
rainfall pattern Ⅱ (long duration and moderate rainfall intensity)
rainfall pattern Ⅲ (short duration and moderate rainfall intensity) and rainfall pattern IV (short duration and heavy rainfall intensity). Meanwhile
four periods were selected according to the tillage patterns to analyze the yield law of runoff and sediment on sloping farmland. The results showed that:(1) During 1991-1992
contour ridge and furrow treatment closed at both ends was the best pattern to preserve soil and water
and there was no significant difference among the rainfall patterns (P>0.05). The effect of slope furrow ridge treatment on soil and water conservation decreased with the increasing of the angle between ridge and furrow.(2) During 2004-2005
sediment yield of sloping ridge plots was 10~20 times that of cross ridge plots
while runoff yield was 1~3 times
which indicated that the reducing sediment effect of the cross ridge was better than its reducing runoff effect
and the soil and water conservation effect of planting Hemerocallis citrine Baroni was better than that of planting Zea mays. (3) During 2006-2008
planting hedgerow of Leucaena leucocephala disturbed the surface soil of the farmland at the initial stage
therefore the runoff and sediment yields of hedgerow plots were larger than that of the control plots
and there was no significant difference in runoff yield among different rainfall patterns(P>0.05). The sediment yield of Z. mays/Ipomoea batatas and Triticumaestivum plot on the cross slope under rain pattern Ⅱ was significantly higher than that of other rain patterns (P<0.05)
which was 4.4~26.7 times that of other rain patterns. (4) During 2013-2016
the hedgerow had been colonized for three years
the soil and water conservation effect of hedgerow plots were better than that of control plots
and the sediment reduction effect was better than runoff reduction effect
and the soil and water conservation effect of Vetiveria zizanioides hedgerow was better than that of L. leucocephala hedgerow. Under rainfall pattern Ⅲ
there was very significant difference in sediment yield among the plots (P<0.01). On the whole
contour ridge and furrow treatment closed at both ends was the best way for soil and water conservation. Hedgerow had obvious effect on reducing sediment yield
but it increased sediment yield at the initial stage
and occupying farmland and affecting machine ploughing were also weak points. Therefore
suitable tillage and cropping patterns should be selected in combination with natural economic conditions.
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Characteristics of the Runoff and Sediment Yield of Sloping Farmland in the Purple Soil Area Under Different Rainfall Patterns
Characteristics of Rainfall Runoff and Hydrological Dynamics on the Erosive Weathered Granite Slope
Effects of Slope Gradients on Erosion Under Different Vegetation Coverage on Purple Slopes
Effect of Rainfall Intensity and Slope Gradient on Runoff and Sediment Yield on the Red Soil Slope Nested Gravel-sand
Effects of Engineering Measures on the Runoff and Sediment Yield in Slope Land Under Different Rainfall Intensities
Related Author
MA Xing1
ZHENG Jiangkun1
WANG Wenwu1
CHEN Xin2
QIN Wei3
4
DENG Longzhou
ZHANG Liping
Related Institution
Key Laboratory of soil and water conservation and desertification combating of colleges and universities, Sichuan Agricultural University
Soil and Water Conservation Experimental Station in Suining
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research
Research Center on Soil and Water Conservation of the Ministry of Water Resource
Institute of Soil and Water Resources and Environment, Zhejiang Key Laboratory of Agricultural Resources and Environment, College of Environmental and Resource Sciences of Zhejiang University