微型多功能乘坐式自转弯免耕机滚船由湖南省农民张大坚研制成功，最近获得国家专利 (专利号 ZL99233033.5)。 　　该产品由船体、机架、动力、操纵杆、扶手、齿轮箱、左右分离操纵杆和分成两段的耕作滚及升降器组成。它采用铁质滚叶，适应在山区、丘陵及平湖区的硬田、软田、烂 Miniature multi-function ride-type self-turning tilling machine rolling boat made by Hunan farmers Zhangda Jian successfully developed, recently won the national patent (patent No. ZL99233033.5). The product consists of the hull, frame, power, joystick, handrails, gear boxes, left and right separation lever and is divided into two sections of farming rolls and lifters. It uses iron leaf, to adapt to the hard hills in the mountains, hills and Pinghu District, soft field, rotten