颁布单位： |  颁布时间：2019 |  实施时间：2019 |  学科分类：[Corn, Polyhalite, Nutrient Uptake, Maize, Potassium, Calcium, Magnesium, Sulfur, Yield, Illinois, United States, Fertility, POLY4, Nutrient, Uptake, Partitioning, Remobilization, Nutrient Accumulation]

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颁布单位：[the University of Pittsburgh] |  颁布时间：2010 |  实施时间：2010 |  学科分类：[Agronomy, Betty Crocker, Bonanza Farms, Chicago Board of Trade, Corn, Epic of Wheat, Flour Milling, Frank Norris, General Mills, Henry Agard Wallace, Nonpartisan League, United States, Wheat]

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