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Qin Hongling, Gao Wangsheng, Ma Yuecun, Zhao Peiyi. Effect of standing crop stubble on soil erosion by wind under no-tillage[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2008, 24(4).
Citation: Qin Hongling, Gao Wangsheng, Ma Yuecun, Zhao Peiyi. Effect of standing crop stubble on soil erosion by wind under no-tillage[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2008, 24(4).

Effect of standing crop stubble on soil erosion by wind under no-tillage

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  • Received Date: March 20, 2007
  • Revised Date: March 01, 2008
  • Published Date: April 29, 2008
  • To discuss the mechanism of controlling soil erosion by wind with standing crop stubble, combined the wind tunnel experiment with field experiment, the influence of soil erosion by wind on standing crop stubble under no-tillage practices was analyzed. The wind tunnel test results show that surface soil velocity and wind erosion modulus in the farmland under plow tillage are larger than that under no-tillage with standing crop stubble, while surface roughness under plow tillage is smaller than that under no-tillage with standing crop stubble. At the same surface soil velocity, the wind erosion modules under plough tillage are 3~8.2 times of those under no-tillage. And the wind erosion modules decrease with the increase of years of no-tillage. The order of surface roughness under no-tillage with different standing crop stubbles is millet forage>maize forage>oats>rape, while the order of the soil wind erosion modules is rape>oats>maize forage>millet forage. The larger the soil wind erosion modules are, the smaller the surface roughness is. The field experimental results show that the order of the capabilities of protection for uncovered farmland by standing crop stubble are millet forage>oats>maize forage>rape. The experimental results of wind tunnel are similar to that of observation result. Therefore, the wind tunnel technique may become an important experiment tools for controlling wind erosion in the farmland.
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