Controlled drainage through main ditches boosts water efficiency in farmland.
Using main ditches for farmland drainage in Huaibei Plain can waste water resources. By controlling drainage in Bazhang and Chezhe Ditches, researchers found that regulating main ditches can improve groundwater depth, increase groundwater use, and enhance farmland environment without affecting drainage. This technique has been successful in Huaibei Plain, providing social, economic, and environmental benefits. It can be a model for similar areas to manage water resources effectively.