摘要
通过对联合收割机推广趋势的定量分析和定性分析，建立了推广预测模型，它对我们今后联合收割机的推广工作有着重要的指导意义。
The model in popularizing combined harvester is built up by the qualitative and quantitative analysis of combined harvester popularizing,And it is important to popularizing combined harvesters.
关键词
联合收割机
推广
模型
Combined harvester
Popularizing
Model
