由于地下水位下降，灌溉井干涸，居于世界之首的中国小麦产量，已经从1997年1.23亿吨的峰值下降了8%。

As water tables have fallen and irrigation wells have gone dry, China's wheat crop, the world's largest, has declined by 8% since it peaked at 123 million tons in 1997.

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自从水资源保护项目在村里的开展和地下水位的提升，这口井在旱季也能为作物灌溉提供水源。

As the conservation program has progressed in the village and the water table has risen, this well has also been able to provide irrigation for crops during the dry season.

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减压井和排渗沟联合排渗减压是降低地下水位、防止库外浸没的有效措施。

With decompress well and drainage ditch to drain and decompress can effectively reduce groundwater level and prevent immersion outside reservoir.

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