Few of the world's great rivers that run through grain-growing areas now reach the sea all the year round or, if they do, they do so as a trickle.

世界上那些流经粮食生产区的河流很少有终年奔流到海的，即使有，也是涓涓细流。

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What's more, demand for animal products in developing countries is growing so fast that meeting it will require an extra 300 million tons of grain a year by 2050.

此外，发展中国家对动物产品的需求增长如此之快，以至于到2050年时每年将需要额外增加3亿吨谷物才能满足需求。

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But demand for grain is growing even faster. The council reckons it will reach 1,680m tonnes this year.

但粮食需求的增长更快，今年估计会达到1,680,000,000吨。

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High interest rates and taxes and a strong real have held back growth, especially in the more prosperous south and the grain-growing centre-west.

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Desert areas are expanding by 3, 000 square miles each year and farmers are being paid to plant trees to halt this advance, thus further reducing the grain-growing area.

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Chile has not undergone the job-destroying switch from traditional farming to the highly mechanised prairie grain-growing that is typical of the United States or, more recently, parts of Europe.

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