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根据历年的积累资料,采用人工神经网络方法,对黑龙江东南农田一代粘虫发生程度进行了预测预报研究.结果表明:该方法性能良好,预测准确,可望成为植物病虫害预测预报一种新的有效辅助手段“,”This paper puts forward a forecast model of artificial neural network with historical data. We have used this model to forecast occurrences of mythimna separata in the southeast area of Heilongjiang Province. The result indicated that this method worked well with good effects.