Using the information of rice phenology observed in Kai- yuan City and with the method of multiple regression, a long term forecasting model for rice yield was established.
本文以辽宁省开原市水稻物候观测实际资料为例，采用多重回归的方法，建立了影响水稻产量的多时效预报模式。
The results tested the pest data showed that the new method may be tried for the mid term or long term forecasting of the population dynamics of insect pests, and it is a good model for application.
研究结果表明，该预测模型为农业害虫种群动态的中长期预测预报提供了一种新的研究方法，是一种优良的模型。
Because of the inherent bias in the traditional grey-forecasting model and the fixed choice of its parameter, the forecast precision is relatively low and unsuitable to the long-term forecasting.
由于传统灰色预测模型固有的偏差和模型参数的固定选择，导致预测精度较低，不适应中长期负荷预测。
Geological prediction is divided into long-term forecasting and short-term forecasting, which are the two successive steps in the work of geological prediction.
超前地质预报分为长期和短期两类，它们是超前地质预报工作步骤中的先后两步。
Geological prediction is divided into long-term forecasting and short-term forecasting, which are the two successive steps in the work of geological prediction.
超前地质预报分为长期和短期两类，它们是超前地质预报工作步骤中的先后两步。
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