After determining duality nonlinear functions of two subsystem, we give the general form of yield loss forecasting model.

在两个亚系统的二元非线性模式确定以后，给出了产量损失预测模型的一般形式。

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Maize dwarf Mosaic was predicted using growth model forecasting method, Markov chains forecasting method and regression model forecasting method. And yield loss of MDM was assessed.

利用生长模型预测法、马尔科夫链预测法和回归模型预测法对玉米矮花叶病发生流行进行预测，并对玉米矮花叶病损失估计进行了初步探讨。

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