共 13 条
[2]
GREENLAND D. J., 1958, Journal of Agricultural Science, V50, P82, DOI 10.1017/S0021859600029919
[3]
LYON TL, 1923, J AM SOC AGRON, V15, P457
[4]
MEIKLEJOHN J, 1962, EMPIRE J EXP AGR, V30, P115
[5]
MEIKLEJOHN JANE, 1965, RHODESIA ZAMBIA MALAWI J AGR RES, V3, P67
[6]
MEIKLIJOHN J, 1953, P SOC APPL BACTERIOL, V15, P77
[7]
MILLS W. R., 1953, East African Agricultural Journal, V19, P53
[8]
NYE P. H., 1951, EMPIRE JOUR EXPT AGRIC, V19, P275
[10]
Russell E. W., 1961, SOIL CONDITIONS PLAN