The mid and longtermforecast model based on the time series analysis has a good forecast effect.
建立在时间序列分析基础上的中长期预报模型具有很好的预报效果，可以用于作业预报。
2
The simulated results suggest that uncertainty exists in some extent to make longtermforecast of the bollworm dynamics.
本文的研究结果说明，对棉铃虫中长期发生态势的预测，存在一定程度的不确定性。
3
Combining with the advanced water resource dispatch project of Yunnan Power Group, the ANN model is successfully applied to mid-longtermforecast system of water resource.