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氮镁磷钾肥对橡胶幼树生长量、叶片矿质养分含量和镁缺乏症的影响
许能琨
EFFECTS 0F N,Mg,P AND K FERTILIZERS ON GROWTH, MINERAL NUTRIENT CONTENT OF LEAVES AND Mg DEFICIENCY OF IMMATURE RUBBER TREES
Xu Nengkun
热带作物学报 . 1981, (2): 24 -34 .