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.

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%。

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Powerguda's crop yields from the dry soil were so low that most of the villagers had taken to migrant work on other farms.

普尔古达的干旱土壤使得农作物收成很差，因此，大多数村民都在别的农场干活。

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CARACOLLO, Bolivia—It's as inhospitable as climates come for crop cultivation, the dry and rocky soils of Bolivia's semiarid altiplain.

玻利维亚开那哥罗地区，这个雨量稀少的反平原地区，其干旱、多石的土壤和该地气候一样对作物的培育不利。

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Crop yields in recent dry years were less affected by drought than crops of the dust-bowl droughts of the 1930s, when there was less carbon dioxide.

WSJ: Harrison H. Schmitt and William Happer: In Defense of Carbon Dioxide

In the dry season, though, after the crop has been harvested, the trees shoot upwards and reach three metres in height in eight months.

ECONOMIST: A new twist on an old idea is improving farm yields in Africa

This year, he got his crop into the ground by late April, but dry conditions are now causing damage and reducing the number bushels his fields will produce.

WSJ: Midwest's Dry Spell Threatens to Intensify