Abstract:Aiming at the problems of straw stubble distribution inhomogeneity, inconsistent soil compaction on both sides of the seeding belt due to side deep fertilizing, which causes the problems of lateral instability and ridgedropping of the no-tillage planter, at the same time, in order to lessen the number of times the topdressing equipment enters the ground and maximize the fertilizer utilization rate, the side deep and layered fertilizing and seeding components of no-tillage planter was designed, which could apply the base fertilizer laterally and deeply and distribute the seed manure vertically. Also, the field experiments were carried out on the parameters that affected the lateral stability of the no-tillage planter and the operating quality. The influence factors of the field experiments included the disc diameter, disc angle and disc dipping of staggered double disc fertilizer ditch opener. Evaluation indices included the forward resistance, lateral force and ditching depth stability coefficient. The results showed that when the disc diameter was 352 mm, the disc angle was 14°, and the disc dipping was 7.5°, the forward resistance of the staggered double disc fertilizer ditch opener was 585.96 N, the lateral force of the staggered double disc fertilizer ditch opener was 181.95 N, and the ditching depth stability coefficient was 91.46%. The prototype performance experiment results showed that the seed fertilizer vertical distance qualification rate was 91.7%, the seed fertilizer lateral distance qualification rate was 92.4%, the sowing depth variation coefficient was 10.7%, and the sowing width variation coefficient was 28.4%, which could satisfy the side deep fertilizing and sowing quality requirements.
