中国半干旱区农田土壤碳、氮、磷含量对玉米生产的影响
胡延斌, 张强, 肖国举, 仇正跻, 李永平, 郭占强

Effect of soil carbon, nitrgen and phosphate contents on maize production in semi-arid regions of China
Yanbin Hu, Qiang Zhang, Guoju Xiao, Zhengji Qiu, Yongping Li, Zhanqiang Guo
图4 农田土壤固碳的增产协同效应与阈值[10]
Fig.4 The synergistic effects of enhanced SOC sequestration on crop yield and its threshold [10]