施石灰和秸秆还田对双季稻田土壤钾素表观平衡的互作效应

刘磊, 廖萍, 邵华, 刘劲松, 杨星莲, 王静, 王海媛, 张俊, 曾勇军, 黄山

Interactive effects of liming and straw return on apparent soil potassium balance in a double rice cropping system

LIU Lei, LIAO Ping, SHAO Hua, LIU Jin-Song, YANG Xing-Lian, WANG Jing, WANG Hai-Yuan, ZHANG Jun, ZENG Yong-Jun, HUANG Shan

图4 施石灰和秸秆还田对早、晚稻季和周年钾素表观平衡(a~c, 2015-2018)及4年总累积钾素表观平衡(d)的影响 处理同图1。误差线表示平均值的标准误差(n = 3)。不同小写字母表示同一年份处理间差异显著(P < 0.05)。

Fig. 4 Effects of liming and straw return on seasonal and annual soil apparent K balance (a, b, c) from 2015 to 2018 and cumulative apparent K balance (d) Treatments are the same as those given in Fig. 1. Error bars represent the standard errors of the means (n = 3). Different lowercase letters indicate significant difference at P < 0.05 among treatments in the same year.