Fig. 1 Wheat grain yield response to (a) N supply and (b) total N uptake on basal N fertilizer rates fitted to the model Y = A/[1 + exp(b - cN)], with N application at the 1st node stage for each tillage–straw treatment
Fig. 1 Wheat grain yield response to (a) N supply and (b) total N uptake on basal N fertilizer rates fitted to the model Y = A/[1 + exp(b - cN)], with N application at the 1st node stage for each tillage–straw treatment