High pH decreases the contents of stable organic nitrogen fractions and nitrogen supply capacity by inhibiting soil organic carbon in saline-sodic paddy fields - Baishun Liu; Lihua Huang; Fengyi Zhang; Jinghui Cai; Lei Tian; Xiaotong Jiang; Yanping Liang; Ge Zhu; Guangzhi Huang (Soil and Tillage Research, 2026)