Design and field experiments of 2BFM-5 hilly no-tillage seeder

According to the operational requirements for stubble mulch no-till sowing and drought-resistance sowing in the water erosion area of Loess Plateau，2BFM-5 hilly no-till seeder has been developed, whose power source was a hand tractor with 8.8-11.0kW power. The seeder adopted the long-wing and cusp combined opener in which the seed and the fertilizer were discharged separately, and the double-wheel profiling mechanism with ante-position compound hinges and the helical tooth fluted wheel. The field experiment showed that the seeding uniformity variation coefficient of this seeder was 35.4%, sowing depth qualified rate was 81.8%.The average distance between seed and fertilizer was 44.0 mm, the fertilizer was concentrated in the soil range of 90-100 mm, and the ground surface could form the small furrow which width was 66-85 mm and depth was 40-52 mm. Every technical performance indices met the requirement of agricultural planting. This seeder is adapt to the no-till sowing in gentle slop (less than 15°)and the level terrace of the water erosion area of Loess Plateau in our China, and also to the seeding technique requirement of “deep sowing and shallow covering, compacting and moisture preservation, rainfall harvesting and drought resistance” and so on in rain fed agricultural region.