共 31 条
[1]
[Anonymous], 1991, PRINCIPLES PROCEDURE
[2]
Buckner R. C., 1985, Forages: the science of grassland agriculture, P233
[4]
CASLER MD, 1988, AGRON J, V80, P509
[6]
Chamblee D. S., 1988, Alfalfa and alfalfa improvement, P439
[7]
Childers W. R., 1985, Forages: the science of grassland agriculture, P217
[8]
DROLSON PN, 1976, ASA SPEC PUBL, V27, P223