共 15 条
[1]
BATE G. C., 1962, Rhodesia Agricultural Journal, V59, P14
[4]
HALL T. D., 1950, EMPIRE JOUR EXPTL AGRIC, V18, P8
[6]
MEIKLEJOHN, 1951, PL SOIL, V3, P88
[7]
MILLBANK J. W., 1959, Plant and Soil, V11, P293, DOI 10.1007/BF01371730
[9]
Rattray, 1960, RHOD AGR J, V57, P424