contour ditchの例文

例文

  1. Potassium lost by runoff was equal to that lost by bed load in fallow farming system , but in the systems with more sediment such as traditional farming system , grass stripe , and contour ditch potassium loss was mainly through bed load which accounte
  2. ( 2 ) the losses of organic carbon , nitrogen , phosphorus and potassium were different in different farming systems . this losses of these elements according to respective farming systems was the following order : tradition > grass stripe > contour ditch > fallow > contour dam . compared with traditional fanning practices , others farming systems reduced losses of organic carbon , nitrogen , phosphorus and potassium and losses in contour dam , contour and fallow were much less than grass stripe and contour ditch
  3. ( 3 ) the farming systems which had a less degree of soil erosion and sedimentation , organic carbon was lost mainly through runoff but in farming systems in which soil erosion was serious such as in grass stripe , contour ditch , traditional farming system , the loss was through bed load . nitrogen loss through runoff was 81 . 9 % - 93 . 4 % of the total . this loss through runoff comprised 78 % - 87 . 6 % dissolved nhvn and no " 3 - n although the former was slightly higher than latter as it made up 55 . 14 % of the lost nitrogen
  4. The results show that ( 1 ) the system of contour dams , contours and fallow had positive impact on water and soil losses than grass stripes and contour ditch . at the same time it was showed that contour dams , contours , fallow significantly reduced soil erosion and water loss , grass stripe and contour ditch had recorded reduction in water and soil losses although to a much less extent than above 3 farming systems . most of sediment was bed load in all the systems except in contour dams and contour fanning

隣接する単語

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