Figure 3.

Effect of soil amendment on rice yield. CK control, BC biochar, LM lime, SC silicon–calcium fertilizer, ZLY 819 Zhuliangyou 819, LLY 996 Luliangyou 996, YZX Yuzhenxiang, XWX 13 Xiangwanxian 13. The different letters indicate that significant differences were found between the treatments for each cultivar using least significant difference tests. The numeric values represent mean ± standard error. Values followed by different lowercase letters in the same group indicate significant difference among treatments n = 3, p < 0.05.