共 13 条
[1]
BOWMAN DALE E., 1964, AGRON J, V56, P177
[3]
Crampton EW, 1938, J NUTR, V15, P383
[4]
DEINUM B, 1968, Netherlands Journal of Agricultural Science, V16, P217
[7]
HIGHT GK, 1968, NEW ZEAL J AGR RES, V11, P286
[9]
SULLIVAN J. T., 1956, AGRON JOUR, V48, P11
[10]
TILLEY J. M. A., 1963, JOUR BRIT GRASSLAND SOC, V18, P104