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施肥进步在粮食增产中的贡献及其地理分异
宇万太, 张璐, 马强, 殷秀岩, 沈善敏
Contribution of fertilization development to yield production and its geographic differentiation
YU Wantai, ZHANG Lu, MA Qiang, YIN Xiuyan, SHEN Shanmin
应用生态学报 . 2003, (11): 1855 -1858 .