共 8 条
[1]
CHAPMAN HD, 1931, SOIL SCI, V33, P125
[2]
Fiske CH, 1925, J BIOL CHEM, V66, P375
[3]
DETERMINATION OF NITROGEN, PHOSPHORUS, POTASSIUM, CALCIUM, AND MAGNESIUM IN PLANT TISSUE - SEMIMICRO WET-DIGESTION METHOD FOR LARGE NUMBERS OF SAMPLES
[J].
INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION,
1946, 18 (05)
:319-322
[4]
MIKKELSEN DS, 1947, J AM SOC AGRON, V39, P165
[6]
SMITH GF, 1938, ORTHOPHENANTHROLINE