The reduction of the noise and airflow pressure dropped in the fan of 4ZTL-1800 rice combine harvester threshing prior to cutting should be paid attention.
气吸式4ZTL-1800割前摘脱稻（麦）联合收获机的吸运风机的能耗和噪声一般都较大。
So introduced the present status of rice combine harvester, analyzed the main problems and their reasons, directed the development trend and counter measure of rice combine harvester in our country.
因此，介绍了我国水稻联合收获机械化的现状，分析了存在的主要问题和产生问题的原因，指出了水稻联合收获机的发展趋势以及应采取的对策。
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