섬유

effectiveness of some crops in removing minerals from soils irrigated with sewage effluent

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 354
a series of experiments was initiated in 1975 in israel to study the possible use of secondary sewage effluent as a source of both water and nutrient for some crops. at the same time uptake of minerals by the crop could prevent excessive buildup of toxic elements in the soil. the crops used were rhodes grass, cotton and sugar beet. effluent irrigation treatments (quantities and frequencies) vs. fresh water were tested in combination with several levels of fertilizer-n. the amounts of effluents and water applied were within the range normally used for these crops. dry matter production, mineral composition and uptake of the plants were measured. the amount of mineral uptake was directly related to the yield of plants. attention was also paid to heavy metals although levels found in the effluent were low. refs
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