Grain yield and stover production in the growing seasons 2015–16, 2016–17, 2017–18 in Conservation farming (CF) with biochar (CF-BC), normal CF (CF-NORM), CF with no residue (CF-NO-RES) and conventional (CONV).

Standard error of the mean (s.e), n = 4. For root dimension n = 12.均值标准误（Standard Error of the Mean，简写为s.e.），样本量n=4。针对根维度（root dimension），其样本量n=12。