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UMD and Cornell researchers published work in Science Advances showing that regional specialization in rain-fed crops like corn and soybeans has made US yields more variable amid more frequent droughts. The Midwest is identified as the most vulnerable region.
The findings point to growing yield volatility in Midwest corn and soybeans, a structural risk that can support prices during drought years but does not move the market on its own.
today.umd.edu2019年2月19日在过去 445 次中性的天气事件之后，玉米 在 5 个交易日内中位数变动 +0.1%（52% 上涨；中间一半区间为 -1.4% 至 +1.6%），20 个交易日内为 +0.7%。
在过去 324 次中性的天气事件之后，大豆 在 5 个交易日内中位数变动 +0.0%（52% 上涨；中间一半区间为 -1.4% 至 +1.7%），20 个交易日内为 +0.7%。
各商品基准价相对事件前最后收盘价的变动。历史数据汇总同类过往事件；仅描述已发生的情况，不代表未来走势。不构成投资建议。
