The grain region of the Hai River Basin relies on groundwater for 70pc of irrigation.

海河流域的产粮区，地下水占了灌溉用水的70%。

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An expansive biological pond serves as a basin collecting rainwater and surface water run-off for landscape irrigation.

一个广阔的生物池塘作为收集雨水和地表水径流的景观灌溉流域。

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Taking Urumqi River Basin as a test region, this paper presents the building principles and approaches of multi-objective grey decision models for land irrigation system in the basin.

本文以乌鲁木齐河流域为试验区，介绍了干旱区流域土地灌溉系统的多目标灰色决策模型的构造原理和方法。

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The potential for new large-scale upstream irrigation in the Mekong basin is limited by topography and so the annual flow of 400-500 billion cubic metres into the Delta is just not to going to disappear.

ECONOMIST: Letters