共 7 条
[1]
BAUER HE, 1969, AGRON J, V61, P604
[2]
BREITHOF M., 1959, Agricultura, Louvain, V7, P207
[3]
GHORASHY SR, 1969, CROP SCI, V5, P399
[4]
GREER H. A. L., 1965, Crop science, Madison, V5, P229
[6]
IRVING RM, 1968, T128 OKL AGR EXP STN