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中文摘要：
将粗糙集理论引入农机需求预测，从诸多影响因素中提取出了关键因素．并对因素重要程度进行了排序，得到一致、完备的预测规则。与传统方法相比，该方法无需前提假设，而且可有效处理农机需求与影响因素之间的强耦合与非线性关系，是一种适用性强的预测方法。
英文摘要：
Rough set theory was introduced into the demand forecasting of agricultural machinery. After extracting key factors from all influencing factors, significances of key factors were ranked and forecasting rules with conformity and completeness were obtained. Comparing with other traditional forecasting meth- ods, our method is widely applied, which doesn＇t need precondition and can effectively deal with the coupling and nonlinear relation between the demand of agriculture machinery and influencing factors.
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