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一、黑龙江省革命委员会农机局、科技局、机械局于一九七一年八月七日至八月十二日在笔架山农场联合召开了“黑龙江省联合收获机麦收试验鉴定会议”。参加会议的有三十个单位,八十七名代表。到会进行试验鉴定的样机有黑龙江生产建设兵团六十三团五营试制的五·七—2.2型牵引式联合收获机,齐齐哈尔车辆工厂试制的新曙光—4.3型自走式联合收获机,佳木斯农机厂试制的丰收—3.3型自走式联合收获机和黑龙江省农机研究所试制的东方红—2.2型牵引式联合收获机。
I. Heilongjiang Provincial Revolutionary Committee Agricultural Machinery Bureau, Bureau of Science and Technology, and Machinery Bureau jointly held the “Heilongjiang Province Combine Harvester Wheat Acceptance Testing Conference” at Bijiashan Farm from August 7 to August 12, . Thirty units and 87 delegates attended the meeting. To be tested for the prototype of the trial of Heilongjiang Production and Construction Corps six groups of five batches trial production of five seven -2.2 type traction harvester, Qiqihar vehicle factory pilot new dawn -4.3 self-propelled combine harvester, Jiamusi Trial production of agricultural machinery plant harvest -3.3-type self-propelled combine harvester and Heilongjiang Agricultural Machinery Institute trial version of Dongfanghong -2.2-type traction combine harvester.