燕麦不同留茬高度对土壤风蚀的影响

Effect of Different Residual Stubble Height of Oats on Farmland Wind Erosion

以位于内蒙古阴山北麓武川地区耕地为试验地点,对燕麦不同留茬高度进行粗糙度、风蚀量和吹蚀量的监测,比较燕麦不同留茬高度对土壤风蚀的影响。结果表明,与传统耕作相比,燕麦田留茬能有效增大地表粗糙度和降低近地风速;随着燕麦留茬高度的增加,地表粗糙度增大、风蚀量和吹蚀量降低。

Taking Wuchuan area at the north foot of Yinshan mountains as test location,the roughness,wind erosion amount,and deflation amount in fields with different residual stubble height of oats was monitored to study the effects of residual stubble height of oats on wind erosion of field.The results showed that compared with traditional cultivation,residual stubble in oats field could effectively increase earth surface roughness while slow down near surface wind speeds.With the increase of residual stubble height of oats,surface roughness increased while wind erosion amount and deflation amount decreased.