This project builds on existing field trial data on the water requirements of dent corn to identify key meteorological parameters associated with waterlogging-induced damage. Yield loss data resulting from water stress will be compiled to serve as a foundation for disaster relief assessment. The findings will further be translated into standardized parameters and crop damage prediction indicators applicable to the disaster relief system, thereby strengthening the objectivity and consistency of agricultural loss assessment. Results showed that growth performance differed significantly between each seedling-stage waterlogging treatment group and the control group, indicating that the physiological responses of corn are clearly distinguishable across different waterlogging durations. This finding provides an important basis for subsequently establishing the relationship between meteorological conditions and yield loss, as well as for defining disaster threshold indicators.

▲Figure 1. Effects of waterlogging stress on growth traits and chlorophyll content in field corn seedlings.

▲Figure 2. Growth performance of field corn seedlings under different waterlogging treatments