图1 炭肥互作对不同生育期大豆株高的影响 缩写同 表1 。图中不同字母表示不同处理之间在0.05水平上差异显著。 Fig. 1 Interaction effect of biochar and fertilizer on soybean plant height at different growth stages Abbreviations are the same as given in Table 1 . Bars subscripted by different letters are significantly different at the 0.05 probability level between different treatments.