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苏南地区稻田土壤肥力演变、养分平衡和合理施肥
李荣刚, 杨林章, 皮家欢
Soil fertility evolution, nutrient balance and reasonable fertilization in paddy field in southern area of Jiangsu Province
LI Ronggang, YANG Linzhang, PI Jiahuan
应用生态学报 . 2003, (11): 1889 -1892 .