生物炭连续施用对农田土壤氮转化微生物及N2O排放的影响
董成,陈智勇,谢迎新,张阳阳,缑培欣,杨家蘅,马冬云,王晨阳,郭天财
Effects of Successive Biochar Addition to Soil on Nitrogen Functional Microorganisms and Nitrous Oxide Emission
DONG Cheng,CHEN ZhiYong,XIE YingXin,ZHANG YangYang,GOU PeiXin,YANG JiaHeng,MA DongYun,WANG ChenYang,GUO TianCai

图2. 生物炭施用对玉米籽粒产量的影响
BC0、BCL、BCM、BCH分别代表对照、低量生物炭、中量生物炭和高量生物炭4种处理。相同年度不同处理图柱上不同字母表示处理间存在显著差异（P<0.05）;柱形图顶部“±”代表标准误（n=3）。下同

Fig. 2. Effects of biochar addition on grain yield of summer maize
BC0, BCL, BCM and BCH represent control, low, medium and high rate of biochar treatments, respectively. Different letters in the same annual indicate significant differences between treatments (P<0.05). Error bars in column top indicate standard errors (n=3). The same as below