Effects of Meteorological Conditions and Irrigation Levels during Different Growth Stages on Maize Yield in the Jing-Jin-Ji Region

Maize is a major crop that particularly sensitive to climate change. In addition, the extreme shortage of water resources threatens production. Thus, improving effective utilization rate an important problem discuss. this regard, we quantified combined effects meteorological conditions and irrigation levels during different growth stages on city-level maize yields in Jing-Jin-Ji region from 1993 2019. The results show sowing period was affected by minimum temperature, while other were maximum temperature. At ear stage summer maize, when reached average level (52%), inflection point total precipitation 401.42 mm region. When higher than mm, yield decreased with increasing precipitation. Furthermore, significantly drought at seedling stage. high rates over long dry spells, as mean daily temperature spells increased, easily increased. increase can reverse decrease yield. Moreover, increased rise longer but warmer temperatures shorter spells. As such, our evaluation will be useful for assessing food security moving gradually toward achieving water–energy–food nexus.