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The impact of different sowing dates on wheat yield formation
Abstract
Amid the increasing frequency of extreme weather events worldwide, significant year-to-year variations in environmental conditions have become apparent. The timing of wheat sowing plays a critical role in influencing its growth and development, thereby impacting China's food security. This study investigated the effects of different sowing dates on wheat growth, grain filling, and maturity in Xinxiang, Henan Province. By implementing five sowing date gradients, we analyzed the morphological and physiological changes in wheat and conducted initial assessments of its yield. The results indicate that October 15 represents the most suitable sowing date, leading to improved nitrogen utilization efficiency, higher leaf chlorophyll levels, enhanced stem reserve accumulation and translocation to grains, and increased grain yield. These findings advocate for selecting the optimal sowing time considering climatic and environmental factors, offering a scientific foundation for wheat cultivation.
