共 24 条
[1]
ARNOLD GW, 1969, 1968 P AUST GRASSLD, V2, P189
[2]
BACK HL, 1969, J BRIT GRASSLAND SOC, V24, P168
[6]
THE INFLUENCE OF WINTER NUTRITION, GRAZING SYSTEM AND STOCKING RATE ON THE PERFORMANCE OF SPRING-CALVING HEREFORDXFRIESIAN COWS AND THEIR CALVES .1. WINTER NUTRITION
[J].
ANIMAL PRODUCTION,
1982, 34 (APR)
:213-224
[9]
CONWAY A., 1963, Irish Journal of Agricultural Research, V2, P87
[10]
ERNST P, 1980, P INT S EUROPEAN GRA, P119