5Eva Kerselaers, Lieve De Cock, Ludwig Lauwers. et al. Modeling farm- level economic potential for conversion to organic farming [J] .Agricultural Systems, 2007, 94 (3): 671-682.
6Julie C. Delforce.Separability in farm- household economics: An experiment with linear programming [ J ] . Agricultural Economics, 1994, 10 (2): 165- 177.
7Takeshi hoh, Hiroaki Ishii, Teruaki Nanseki. A modd of crop planning under uncertainty in agricultural management [J]. International Joural ofProduction Economics, 2003, 81 (11): 555-558.
8Christos Papahristodtndou. Option strategies with linear programming [J] .European Journal of Operational Research.2004, 157: 246- 256.
9David Makowski, Eligius M T Hendrix, Martin K.van Ittersum.et al. Generation and presentation of nearly optimal solutions for mixed -integer linear programming, applied to a case in fanning system design [J] European Journal of Operational Research, 2001, 132 (2): 425-438.
10Mohamed Haouari, Mohamed N Azaiez. Optimal cropping patterns under water deficits [ J ] .European Journal of Operational Re- search, 2001, 130 (1) : 133 - 146.
