遵照伟大领袖毛主席“农业的根本出路在于机械机”的光辉指示,1974年10月开始了北方铧式犁系列设计,有北方十三个省、区的33个单位参加设计工作。在各级党委的正确领导下,同工农相结合,开门办科研。实行了工人、领导干部和技术人员及科研、制造和使用两个三结合,发 In accordance with the glorious instructions of the great leader Chairman Mao “The fundamental way out of agriculture lies in the mechanical machine”, in October 1974, a series of northern plowing ploughs was designed, and 33 units from 13 provinces and districts in the north participated in the design work. Under the correct leadership of the party committees at all levels, we should combine research with the workers and peasants and open doors to do scientific research. The workers, leading cadres, and technical personnel and the scientific research, manufacturing, and use of the two