Development of Centrifugal Disc Spreader on Tracked Combine Harvester for Rape Undersowing Rice Based on DEM

Rape undersowing rice is an effective method to solve the problem of short crop rotation in rice-rape rotation. Applying ground fertilizer rape one most critical aspects this planting pattern. However, a special spreading required after harvested, which increases labor intensity and compaction soil also hindered by lack equipment complete harvesting simultaneously. In response above issues, centrifugal disc spreader on tracked combine harvester for was developed. The basic parameters were designed based agronomic requirements fertilization harvester. Kinematic kinetic models particles developed determine key that affect spreading. Based discrete element simulations, effects single structure interaction distribution pattern investigated. range coefficient variation lateral regression constructed, optimized models. simulation results performance verified bench tests. show from tests consistent. 13.1% test 14.6% test. error 10.3%, indicates result reliable. can meet needs rice. serve as theoretical basis design provide new ways promote accurate efficient fertilizer.