共 29 条
[1]
[Anonymous], 1975, OFFICIAL METHODS ANA
[3]
BLANCHAR R. W., 1965, SOIL SCI SOC AMER PROC, V29, P71
[5]
BREMNER J. M., 1960, JOUR AGRIC SCI, V55, P11, DOI 10.1017/S0021859600021572
[6]
BURROUGHS WL, 1970, NUTRIENT REQUIREMENT
[8]
DEWIT CT, 1963, VERSLAGEN LANDBOUWKU, V69, P15
[10]
Grunes D. L., 1970, Advances in Agronomy, V22, P331, DOI 10.1016/S0065-2113(08)60272-2