Competition from overseas led farmers to specialize and increase yields.

来自海外的竞争促使农民变得专业化，并提高了产量。

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Specialisation and the effort to increase yields have resulted in the decrease of biodiversity.

专业化和提高产量的努力导致了生物多样性的减少。

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And in many countries, applying more fertilizer is the best way, in the short term, to increase yields.

在很多国家，短期内提高产量的最佳办法就是使用更多的化肥。

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Farmers will need, no require, whatever crop enhancers are available to increase yields.

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Some, like Solum and Purfresh, produce tools, often based on IT technologies, for helping farmers, retailers and distributors monitor food stocks to increase yields.

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Success would not only increase yields, but also reduce the need for water and fertilisers, since C4 plants make more efficient use of both.

ECONOMIST: Genetic modification