共 17 条
[1]
Carter N., 1980, Applied Biology (London), V5, P271
[2]
CONWAY GR, 1975, STUDY AGR SYSTEMS, P193
[6]
LEE G, 1981, 1981 P BRIT CROP PRO, V2, P449
[7]
NIX J, 1981, FARM MANAGEMENT POCK
[8]
SAGARMUNAGA RC, 1977, INVESTIGACION PROGRE, V9, P25
[9]
STEED JM, 1979, ARABLE FARM CROPS 19
[10]
TAIT EJ, 1982, 1982 P BRIT CROP PRO, P43