Improvement of water application efficiency of small-strip border irrigation on sandy field
2000
Ikeura, H. (Tottori Univ. (Japan)) | Yamamoto, T. | Inoue, M.
The purpose of this study is the increasing of water application efficiency and length of border strip of small-strip border irrigation on sandy field. The basic experiment about the effect of closed-end condition and slope was done on sandy field in the Arid Land Research Center of Tottori University. The volume balance equation with a term for remaining water at strip-end, and water advance and recession equations with a slope gradient term were used for analysis. The calculated value of infiltration water profile was in good agreement with measured value. In the case of closed-end condition, water application efficiency and length of strip increased compared to open-end condition. In the case of slope condition, length of strip increased too. We investigated the application of closed-end and slope condition for the sandy fields of Mu Us shamo desert. It is estimated that length of strip and water application efficiency under the present state can be improved with the result ob
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