섬유

tillage influences monthly wind erodibility of dryland sandy soils

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 248
tillage will reduce the wind erodibility of sandy soils, but the extent of the reduction depends on the type of tillage and the weather conditions. moldboard plowing a fine sandy loam will increase the percentage of nonerodible aggregates 18 percent and listing will increase it 7. 8 percent. partitioning the estimated wind erosion by months using monthly values of soil erodibility and percentage of erosive wind energy showed that, for march, april, and may, estimated wind erosion for plowing was 28 percent of that for chiseling and 33 percent of that for listing. monthly values of erosion quantify the critical time periods each year when erosion is potentially the most severe and the reduction that might be expected with various tillage methods. dryland cotton lint yields were higher with the more intensive tillage, except in years when spring rains did not replace the moisture lost from the tilled zone. 10 refs
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