Progress on Yield Recovery Mechanism and Coregulation Technology of Late Sowing Wheat

Abstract With increasingly frequent global extreme weather events and transitions in cropping systems, the contradiction between expanding late‐sown wheat acreage and rising yield losses has intensified. Consequently, identifying effective measures and mechanisms for yield recovery in late‐sown wheat has become essential. This review begins by defining and classifying late‐sown wheat and systematically analyzes the response mechanisms of wheat growth and development under delayed sowing conditions. Three key regulatory limitations responsible for yield loss are identified: insufficient accumulated temperature prior to winter and ecological niche misalignment, deterioration of population structure, and imbalance of source‐sink pools. The progressive manifestations of yield component reduction and final yield formation are examined. On this basis, three synergistic technological systems for yield recovery are proposed: individual‐level recovery (variety selection and seed coating), population‐level recovery (high‐density planting and mulching), and spatiotemporal compensation (water and fertilizer regulation). These strategies emphasize the need to integrate multiple agronomic practices to accelerate early growth in late‐sown wheat, align growth with optimal environmental windows, eliminate niche‐dislocation effects, and mitigate late‐sowing stress, ultimately establishing a rapid yield‐recovery mechanism to improve grain production. This study provides theoretical support and practical reference for high‐quality production in late‐sown wheat systems.