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为适应我国农业迅速发展和体制改革的形势需要,为满足广大农村对小型轮式拖拉机配套农具日益迫切的要求,河北省保定农机厂与河北省农机汽车研究所共同研制了1L-220型、1LJ-220型两种悬挂二铧犁及分别与它们配套的1PHX-5型、1PHXJ-5型圆盘平地合墒器,并于1984年11月中旬通过了机械部部级鉴定。与会代表一致认为:这两种复式耕作机具的各项性能指标均达到了设计要求;设计合
In order to meet the needs of the rapid development of agriculture and the reform of the system in our country, in order to meet the increasingly urgent requirements of the rural areas for small wheeled tractors supporting tools, Baoding Agricultural Machinery Factory of Hebei Province and Hebei Agricultural Machinery Research Institute jointly developed 1L-220 type, 1LJ -220-type two hanging two-plow and their accompanying 1PHX-5 type, 1PHXJ-5-type disc heaters, and in mid-November 1984 passed the Ministry of Machinery Ministry appraisal. The participants agreed that: the performance of these two compound tillage tools have reached the design requirements; design