粮食产量预测是制定农业政策的重要依据。
The forecast of grain production is an important resource for establishing agriculture policy.
预测结果表明该模型具有较高的预测精度，为粮食产量预测提供了一条新的途径。
The result is given that the forecasting model is effective and offers a new method to forecast the grain production.
给出了粮食产量预测的常用模型，通过加权组合，进而确定组合预测模型以提高预测精度。
Given the commonly used food production forecast model, with the aid of a weighted combination of prediction model to determine the combination, the prediction accuracy will be improved.
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