研究在保护性耕作条件下不同的覆盖模式对农田土壤风蚀损失量的防治效果,并确定其最佳覆盖模式.结果表明:保护性耕作与传统耕作相比,地表粗糙度大,表层含水率高,不同的覆盖模式可以不同程度的减小土壤的风蚀损失量,损失量由大到小依次为:传统耕作＞留茬5cm不覆盖＞浅松秸秆覆盖＞留茬5cm条带覆盖＞压实秸秆覆盖＞留茬5cm全覆盖,其中,留茬5cm不覆盖的风蚀量仅次于传统耕作,其风蚀量对比传统耕作降低了30.8％,可见,保护性耕作对减小土壤风蚀量的重要性,留茬5cm全覆盖的抗风蚀效果最佳.%The contral effectiveness in the conservation tillage model under different coverage models was researched on soil wind erasion and the best coverage model was determined. The results showed that compared with traditional farming the conservation tillage model has high moisture content in surface layer and big terrain roughness. Different coverage models could reduce the soil loss by aeolian erosion in different degrees. Sorted by soil erosion in descending order: the traditional farming > uncover and left 5cm stubble > shallow scarification and straw mulching > strip mulching and left 5cm stuble > compaction straw mulching > left 5cm stubble and mulching. Among them, the soil erosion under the model of uncovered and left 5cm stubble is second only to the traditional fanning, the loss of aeolian erosion was reduced by 30.8% compared with the traditional farming. The model that left 5cm stubble and complete coverage has the best effect to resist the aeolian erosion.
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