共 12 条
[3]
HABJORG A, 1972, Meldinger fra Norges Landbrukshogskole, V51, P1
[6]
HEIDE OM, 1980, MELD NORG LANDBRUKS, V59, P1
[8]
KLEBESADEL L. J., 1964, CROP SCI, V4, P340, DOI 10.2135/cropsci1964.0011183X000400030033x
[9]
MORSE R. N., 1962, Journal of Agricultural Engineering Research, V7, P128
[10]
SEMBDNER G, 1980, ENCY PLANT PHYSL, V9, P281