Strip deep rotary tillage reduces the optimal nitrogen rate for high maize yield in the North China Plain: A system-specific optimization of root-shoot growth and soil nitrogen availability - Zhuohan Gao; Hongliang Lan; Zhigang Wang; Xinbing Wang; Zaisong Ding; Rui Wang; Lu Liang; Congfeng Li; Ming Zhao; Baoyuan Zhou (Field Crops Research, 2026)