水溶肥料总氮、磷、钾含量的测定
Water-soluble fertilizers--Determination of total nitrogen,phosphorus and potassium content
2010-12-23
LY/T 1270-1999
森林植物与森林枯枝落叶层全硅、铁、铝、钙、镁、钾、钠、磷、硫、锰、铜、锌的测定
Determination of total silica, iron, aluminium, calcium, magnesium, potassium, sodium, phosphorus, sulphur, manganese, copper and zinc in forest soil