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A University of Illinois study using county-level crop insurance data from 1981 through 2016 found excessive rainfall reduced U.S. corn yields by as much as 34% relative to expected yield in some years. Drought and extreme heat caused losses of up to 37% in some years.
The findings were published in Global Change Biology.
The study frames excess rain as a yield risk comparable to drought, reinforcing concern over the current flood-delayed Midwest crop and supporting firmer corn prices.
在过去 1,465 次看涨的天气事件之后,玉米 在 5 个交易日内中位数变动 +0.2%(54% 上涨;中间一半区间为 -1.4% 至 +1.9%),20 个交易日内为 +0.9%。
在过去 1,079 次看涨的天气事件之后,大豆 在 5 个交易日内中位数变动 +0.3%(54% 上涨;中间一半区间为 -1.4% 至 +2.0%),20 个交易日内为 +0.9%。
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。