共 22 条
- [2] Armstrong GM, 1931, J AGRIC RES, V42, P0689
- [3] ARNON DI, 1953, AGRON J, V4, P1
- [7] BIELORAI H, 1973, ARID ZONE RES, V5, P373
- [8] BUSSLER W, 1964, COMPARATIVE EXAMINAT
- [9] DETERMINATION OF NITROGEN, PHOSPHORUS, AND POTASSIUM IN LEAF TISSUE - APPLICATION OF MICROMETHODS [J]. INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1945, 17 (11): : 734 - 738