共 6 条
- [1] BAKER DALE E., 1964, AGRON J, V56, P133
- [2] COMPARATIVE ELEMENTAL ANALYSES OF A STANDARD PLANT MATERIAL [J]. ANALYST, 1967, 92 (1091) : 124 - &
- [3] CARPENTER PN, 1968, 30 MAIN AGR EXP STA
- [4] JONES JB, 1967, DETERMINATION MINERA
- [5] KENWORTHY AL, 1956, AM SOC HORT SCI, V67, P16
- [6] 1966, ATOMIC ABSORPTION ME, V1