No-tillage straw mulching alters fallow rainfall use and improves long-term water balance and yield stability of winter wheat: A 38-year simulation on the Loess Plateau - Xinrui Shi; Chao Li; Chen Cui; Ping Li; Yuzheng Zong; Dongsheng Zhang; Zhiqiang Gao; Xingyu Hao (Agricultural Systems, 2026)