翻訳と辞書 Words near each other ・ Welland Viaduct ・ Welland, Illinois ・ Welland, South Australia ・ Welland, Worcestershire ・ Welland—St. Catharines—Thorold ・ Well cementing ・ Well Chief ・ Well control ・ Well counter ・ Well deck ・ Well depth ・ Well dock ・ Well Done 3 ・ Well Done Abba ・ Well Done, Henry ・ Well drainage ・ Well dressing ・ Well drilling ・ Well drink ・ Well Dunn ・ Well End ・ Well End, Buckinghamshire ・ Well engineering ・ Well Enough Alone ・ Well equidistributed long-period linear ・ Well Hill ・ Well house ・ Well Hung Heart ・ Well Hungarians ・ Well I Ask You Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Well drainage ： ウィキペディア英語版 Well drainage Well drainage means drainage of agricultural lands by wells. Agricultural land is drained by pumped wells (vertical drainage) to improve the soils by controlling water table levels and soil salinity. ==Introduction== Subsurface (groundwater) drainage for water table and soil salinity in agricultural land can be done by horizontal and vertical drainage systems. ''Horizontal drainage'' systems are drainage systems using open ditches (trenches) or buried pipe drains. ''Vertical drainage'' systems are drainage systems using pumped wells, either open dug wells or tube wells. Both systems serve the same ''purposes'', namely water table control and soil salinity control . Both systems can facilitate the ''reuse of drainage water'' (e.g. for irrigation), but wells offer more flexibility. Reuse is only feasible if the quality of the groundwater is acceptable and the salinity is low. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Well drainage」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.