섬유

spectral components analysis. rationale, and results for three crops

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 245
the rationale includes the concepts that vegetation indices adequately measure the amount of photosynthetically active tissue in plant canopies and that high yields cannot be achieved unless growing conditions permit canopies to develop that effectively intercept the available light during reproduction. for wheat, cotton and maize the coefficients of determination (r**2) usually exceeded 0. 90 for exponential, power or linear expressions relating to the numerator (dependent variable, y) to the denominator (x) variable of each term in the first equation. results show that apar can be reliably estimated from vi, and that the relation is nearly linear. the equations help to quality remote assessments of crop productivity (edited author abstract) 53 refs
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