长期施肥对石灰性土壤磷素肥力的影响Ⅰ.有机质、全磷和速效磷
장기시비대석회성토양린소비력적영향Ⅰ.유궤질、전린화속효린
Influence of long- term fertilization on phosphorus fertility of calcareous soil I.Organic matter,total phosphorus and available phosphorus
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