섬유

infiltration rate as affected by an alfalfa and no-till cotton cropping system

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 275
previous studies measured a long-term increase in infiltration rate in a sandy loam soil with time when alfalfa (medicago sativa l., cv. wl514) was grown. cotton (gossypium hirsutum l.) was direct-planted into alfalfa to determine if the high infiltration rates measured under alfalfa culture could be maintained in cotton under either a till or no-till system. treatments were no-till or tillage to the 0.15-m depth just before the cotton was planted. prior compaction levels created by harvest traffic applied to the alfalfa made the soil loose or compacted. cotton was planted flat and irrigated as a basin. water flow in the 5-yr-old alfalfa was determined to be mainly through the soil macropore system. high infiltration rates measured in the no-till cotton were also probably the result of flow through the macropores. (edited author abstract) 22 refs
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