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Time to see the blight

机译:是时候看病了

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RISING CARBON-DIOXIDE levels and the climate change associated with them portend many problems, but one group of people might be expected to give them a cautious welcome: farmers in Earth's temperate zones. More CO_2 typically results in more photosynthesis and therefore higher yields, and milder weather means longer growing seasons. Balanced against these potential benefits, however, is the potential for blight. It is hard to predict how changes in the climate and the atmosphere's chemistry will affect the prevalence and virulence of agricultural diseases (see Science section). But there is a risk that such changes will make some plant infections more common in all climatic zones, perhaps catastrophically so. To fend off this danger, seed companies and botanists need to band together to stockpile a genetic arsenal before it is too late.
机译:二氧化碳水平的上升以及与之相关的气候变化预示了许多问题,但可能有人希望他们受到谨慎的欢迎:地球上温带地区的农民。更多的CO_2通常会导致更多的光合作用,从而提高产量,而更温和的天气意味着更长的生长季节。然而,与这些潜在利益相平衡的是潜在的疫病。很难预测气候和大气化学的变化将如何影响农业疾病的流行和毒力(请参阅“科学”部分)。但是存在这样的风险,即这种变化将使所有气候区的某些植物感染更为普遍,也许是灾难性的。为了抵御这种危险,种子公司和植物学家需要团结起来,在为时已晚的时候储存基因库。

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    《The economist》 |2019年第9139期|12-13|共2页
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