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A University of Illinois economist says recent corn price volatility signals concern over the 2017 U.S. crop. Good-to-excellent ratings fell 3 percent in the July 10 report, and forecasts call for above-normal temperatures and below-normal rain across much of the Corn Belt through July 30.
Heat and dryness during pollination could cut corn yields, tightening supplies and supporting corn prices. Feed buyers should expect firmer corn costs and related feed-ingredient prices if ratings keep slipping.
extension.illinois.eduJuly 18, 20172017年7月18日在过去 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%。
历史可比事件尚不足，暂无法给出历史解读。
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。
