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东风—2.5和新疆—2.5牵引式联合收割机是根据1972年7月北方联合收割机座谈会协议精神,由一机部农机所主持,四平联合收割机厂、新疆第一农机厂、黑龙江生产建设兵团收获机厂、佳木斯农机厂、黑龙江农机所、新疆机械所、东北农学院、东北农垦大学等单位于1972年四季度开始联合设计的。1973、1974年先后在四平联合收割机厂和新疆第一农机厂进行了两轮样机的试制,在湖北、北京、吉林、新疆、黑龙江等地进行了收割小麦、大豆、胡麻等作物的田间试验,并在北京进行了室内性能试验和
Dongfeng -2.5 and Xinjiang -2.5 trailed combine harvester is based on the spirit of the North Combine Harvester Symposium in July 1972, presided over by a machine farm machinery, Siping Combine Harvester Factory, Xinjiang First Agricultural Machinery Factory, Heilongjiang Production and Construction Corps harvesting plant, Jiamusi Agricultural Machinery Factory, Heilongjiang Agricultural Machinery Institute, Xinjiang Machinery, Northeast Agricultural College, Northeast Agricultural University and other units in the fourth quarter of 1972 began joint design. In 1973 and 1974, two rounds of trial prototypes were carried out in Siping Combine Harvester Factory and Xinjiang No.1 Farm Machinery Factory, respectively. Field trials of harvested wheat, soybean, flax and other crops were conducted in Hubei, Beijing, Jilin, Xinjiang and Heilongjiang And carried out indoor performance tests and tests in Beijing