长期施肥对石灰性土壤磷素肥力的影响Ⅱ.无机磷和有机磷
장기시비대석회성토양린소비력적영향Ⅱ.무궤린화유궤린
Influence of long-term fertilization on phosphorus fertility of calcareous soil Ⅱ.Inorganic and organic phosphorus
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