请优化这段论文中的讨论部分使其更有逻辑性、学术性The results of this study suggest that the interannual climate combined with irrigation treatments significantly influence wheat yield This finding is consistent with previous

The present study investigated the effect of interannual climate variability and irrigation treatments on wheat yield. The results revealed that both factors had a significant influence on wheat productivity. This finding is consistent with previous research, which has demonstrated the critical role of weather conditions and water management practices in crop yield (Gao et al., 2022; Wang et al., 2022). The interannual variation in yield for the three treatments was found to be 9.4%, 9.5%, and 10.5%, respectively (Fig. 7). Interestingly, the sources of variation were different for each treatment. The Con and Min treatments showed variation mainly in thousand-kernel weight and ear number, respectively. In contrast, the variation in the Con and Opt treatments was primarily due to weather conditions affecting thousand-kernel weight, consistent with previous findings that high post-flowering temperatures can reduce wheat thousand-kernel weight (Fig. 8).

Moreover, the study found that dry heat winds during late seed filling can cause rapid senescence and death of winter wheat, leading to reduced seed filling rates. The variation in Min treatment was mainly derived from ear number, which is consistent with earlier studies (He et al., 2017; Wang et al., 2017; Zhang et al., 2017). The amount of grain per unit area is closely related to grain yield (Fischer, 2007; Sadras, 2014). The stem elongation period is the most critical period that determines the number of wheat seeds, during which soil water deficit in the uppermost soil layer can severely reduce the number of seeds (Fischer, 2011; González et al., 2011). The present study's results showed that rainfall during the ear number formation stage is an important contributor to the number of ears. In 2019, the rainfall before flowering was the highest in six years, resulting in the highest number of spikes per mu.

In conclusion, this study highlights the importance of weather conditions and irrigation management practices in determining wheat productivity. The findings suggest that different irrigation treatments have varying impacts on wheat yield, and it is essential to consider the interannual climate variability and rainfall patterns when making irrigation decisions. Further research is needed to explore the underlying mechanisms linking climate variability, irrigation management, and crop yield to develop more effective strategies for sustainable agriculture.