旋耕机与旋耕刀98384580-课件ppt（演示稿）.ppt

Rotary TillersAnd Rotary Blades旋耕机与旋耕刀Background?Rotary tiller (rotary hoe) is widely used for soil cultivation?In south of China, more than 80% soil tillage work is finished by rotary tillersRotary tiller used in dry landsL-shaped rotary blades with straight-line edgesRotary tiller used in ChinaRotary blades with curved edges, used in paddy fieldsHoward rotavatorAn Innovation in Australia A long row to hoe The Howard RotavatorIn 1912, 16-year-old Cliff Howard had an idea that would change the way small farms were cultivated. To make hoeing more efficient, Howard introduced power to the hoe’s blades, so that they would dig the earth and help push the hoe forward at the same time. All the farmer had to do was steer.