施肥方式和园龄对洛川苹果园土壤钙素退化的影响
李鹏, 李春越, 王益权, 焦彩强
Effects of fertilizing regime and planting age on soil calcium decline in Luochuan apple orchards
LI Peng, LI Chun-yue, WANG Yi-quan, JIAO Cai-qiang
应用生态学报
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2017, (5): 1611
-1618
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DOI: 10.13287/j.1001-9332.201705.022
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