XDA28100105 - Patent - A method for evaluating changes in water supply-demand and its matching degree during the rice growth period

This application relates to the field of agricultural water resource management, and discloses a method for assessing changes in water surplus/deficit and matching degree during the rice growth period, comprising the following steps: S1. calculating the effective rainfall during the rice growth period; S2. calculating the water requirement of rice based on crop coefficient and potential evapotranspiration; S3. assessing the water-land resource matching index during the rice growth period; S4. calculating the irrigation water requirement during the rice growth period.

The present invention enables accurate assessment of water surplus/deficit conditions during the rice growth period, thereby optimizing irrigation management, saving water, and improving crop yield and quality. Furthermore, through the scientific assessment of the water-land resource matching index, it facilitates sustainable utilization of water resources, holding significant importance for both agricultural production and water resource management.