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出典:Wiktionary
出典:『Wiktionary』 (2011/06/30 14:55 UTC 版)
Tubewell drainage is a technique of controlling the watertable and salinity in agricultural areas. It consists of pumping, from a series of wells, an amount of groundwater equal to the drainage surplus. Early attempts to use series of pumped wells for land drainage and salinity control were made in the USA and the former USSR more than half a century ago.