农作物不同季节灌溉用水研究OA

Ensuring adequate irrigation water supply at the critical growth stages of crops is an important foundation for bumper harvests in irrigated areas and national food security.Given that climatic conditions and crop growth characteristics vary across seasons and lead to different water requirements,irrigation is closely related to the four seasons of spring,summer,autumn,and winter.In the long-term agricultural production practices of China,four irrigation stages of spring,summer,autumn,and winter irrigation have gradually developed based on irrigation timing.To establish a robust policy and institutional framework for agricultural water saving and efficiency enhancement,and guide the entire process of agricultural irrigation water over the year,this paper adopted a literature review,a provincial-level water use survey,and typical investigations to clarify the overall water usage situation and main functions for spring,summer,autumn,and winter irrigation.It conducted regional analyses of the main types of irrigated crops,irrigation water usage,irrigation frequency,and per-mu water usage across the four irrigation seasons.Additionally,the existing problems and challenges in scientific irrigation systems,irrigation probability,intelligent irrigation,and water-adaptive agricultural development were summarized,with corresponding countermeasures and recommendations proposed.The research results can be employed to guide the formulation and revision of scientific irrigation regimes,as well as the scientific scheduling and refined management of agricultural irrigation water,thus providing technical support for improving irrigation water use efficiency and ensuring food security.