Through researching of the cutting platform of bulrush harvesters,the merits and demerits of the cutting platform of bulrush harvesters which are often used at present were analyzed.The cutting platform design project of 4WS2000 high bar bulrush harvesters was put forward.Cutting platform is key component of harvesters,it is made up of separating and supporting bulrush mechanism,pushing bulrush wheel,cutting knife,crossing feed mechanism and so on.The design projects of these mechanisms were presented,The mechanisms' force condition and theirs...