共 6 条
[1]
COLVILLE WL, 1966, 21 P ANN HYBR CORN I, P55
[3]
LANG A. L., 1956, AGRON JOUR, V48, P284
[4]
MONTGOMERY FG, 1911, 24 NEBR AGR EXP STA
[5]
RUSSELL WA, 1967, 552 IOW AGR EXP STA