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Agronomist Nicole Stecklein identified five factors behind below-average corn yields in east-central Iowa in 2025. These included early planting that underperformed, soil crusting, and wind and heat stress during pollination and grain fill.
Localized yield shortfalls in a major Iowa corn area reduce supply slightly, but they are not large enough to shift national corn prices on their own.
agweb.com2025年11月3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%。
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。
