共 15 条
[2]
DUNCAN W. G., 1958, AGRON JOUR, V50, P605
[6]
LEIKAM DF, 1978, AGRICHEMICAL AGE, V22, P6
[7]
LEIKAM DR, 1979, CROPS SOILS, V31, P16
[10]
MILLER M. H., 1958, AGRON JOUR, V50, P95