섬유

problem with nitrates

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 242
according to a recent u. s. department of agriculture report that focused on agricultural counties, and based on collected data from the u. s. geological survey, drastic (a standardized system for evaluating ground water pollution using hydrogeologic settings), and fertilizer use data, ground water contamination from nitrate-nitrogen appears to be concentrated in the following areas: central great plains; the palouse and columbia basin in washington; portions of montana; southwest arizona; the irrigated fruit, vegetable, and cotton growing areas of california; portions of the corn belt; southeast pennsylvania; and parts of maryland and delaware
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