The Impact of Traffic-Induced Compaction on Soil Bulk Density, Soil Stress Distribution and Key Growth Indicators of Maize in North China Plain

The traffic-induced soil compaction in the field has gradually become an important constraint to sustainable agricultural development. A experiment was conducted acquire stress transmitted caused by multiple passes with different types of tractors and investigate impact these stresses on bulk density crop growth. applied two masses: LOVOL M904 (HC) John Deer 280 (LC), six treatments 0 (C0), 1 (C1), 3 (C3), 5 (C5), 7 (C7), 9 (C9) tractor for each tractor. results showed that at number passes, small axle-loads 0–20 cm depth generated higher additional stress, while large 20–80 stress. In layer, when continuous is less than times, a axle-load lead larger density, more 7, leads density. At depths cm, this study, levels inhibited key growth indicators maize, resulting yield reductions. effect load maize increased significantly 1–5 having no significant 7–9 producing greater reductions HC. This study will provide theoretical basis technical support selection machinery reasonable tillage technology.