我国中耕机械是在畜力耘锄的基础上逐步发展起来的,与拖拉机配套的大型中耕机的制造约始于五十年代初。起先是牵引式,后来发展为牵引悬挂式或是悬挂式的。但这些中耕机的主要工作部件都是直 China’s cultivating machinery is gradually developed on the basis of animal power hoe, and tractors supporting the manufacture of large-scale cultivator began about the early fifties. At first it was a traction type and later developed as a traction type or a suspension type. But the main working parts of these cultivators are straight