Design and experiment on twist type ridge-clear device

From the view of the existing problems, such as straw blocking, high energy consumption, too many straw covered after planting in the seedbed, a twist type ridge-clear device for corn ridge till and no-till planter was designed. Field experiment that covered with broken stalks of corn showed that the soil disturbance was 18.3%-26%, the straw percentage of coverage was decreased by 35%-53% in the seedbed, which met the challenges of conservation tillage and was favorable for improving the seeding. Compared with the strip-roto tilling ridge till and no-till planter, the ridge till and no-till planter with twist type ridge-clear could reduced fuel consumption by 13.8%. Therefore the twist type ridge-clear solved the problems of high power consumption with strip-rototilling device, and also created the clean seedbed. This experiment showed that it was significantly important to popularize and apply for ridge-till and no-till seeders in the northeast area of China.