Tillage combined with straw return increases maize yield and water use by regulating root morphological distribution and nitrogen metabolism in Northeast China - Wen Zhang; Anran Long; Xinjie Ji; Zhanxiang Sun; Ping Tian; Chengcheng Jin; Xiangwei Gong; Ying Jiang; Hua Qi; Haiqiu Yu (Soil and Tillage Research, 2026)