共 19 条
[4]
EL-SHARKAWY M. A., 1964, CROP SCI, V4, P514, DOI 10.2135/cropsci1964.0011183X000400050024x
[5]
GAASTRA P., 1959, MEDEDEL LANDBOUWHO GESCH WAGENINGER, V59, P1
[6]
HARWITZ W, 1955, OFFICIAL METHODS ANA, P805
[7]
HESKETH JOHN D., 1963, CROP SCI, V3, P107, DOI 10.2135/cropsci1963.0011183X000300020002x
[8]
JOHNSON CM, 1959, 766 CAL AGR EXP STA, P25
[9]
LOOMIS R. S., 1963, JOUR AMER SOC SUGAR BEET TECHNOL, V12, P309, DOI 10.5274/jsbr.12.4.309