섬유

response of cotton water stress indicators to soil salinity

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 320
a field study was conducted on cotton (gossypium hirsutum l c. v. acala sj-2) to investigate the effects of soil salinity on the responses of stress indices derived from canopy temperature, leaf diffusion resistance and leaf water potential. the four salinity treatments used in this study were obtained by mixtures of aqueduct and well water to provide mean soil water electrical conductivities of 17, 27, 32 and 38 ds/m in the upper 0. 6 m of soil profile. the study was conducted on a sandy loam saline-alkali soil in the lower san joaquin valley of california on 30 july 1981, when the soil profile was adequately irrigated to remove any interference of soil matric potential on the stress measurements. crop water stress index (cwsi) estimates derived from canopy temperature measurements in the least saline treatment had values similar to those found for cotton grown under minimum salinity profiles. refs
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