共 23 条
[1]
Allen H. P., 1975, Outlook on Agriculture, V8, P213
[2]
ECONOMIC COMPARISON OF METHODS OF CULTIVATING AND PLANTING CEREALS, SUGAR-BEET AND POTATOES AND THEIR INTERACTION WITH HARVESTING, TIMELINESS AND AVAILABLE LABOR BY LINEAR-PROGRAMMING
[J].
JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH,
1978, 23 (03)
:283-300
[3]
BATEY T, 1975, SOIL PHYSICAL CONDIT, P207
[4]
CHAMEN WCT, 1979, J AGR ENG RES, V24, P301, DOI 10.1016/0021-8634(79)90072-6
[5]
CULPIN C, 1967, PROFITABLE FARM MECH
[6]
Cussans G. W., 1975, Outlook on Agriculture, V8, P240
[7]
Cussans G.W., 1976, P BRIT CROP PROT C W, P1001
[8]
Davies D. B., 1975, Outlook on Agriculture, V8, P216
[9]
Edwards C. A., 1975, Outlook on Agriculture, V8, P243
[10]
Edwards C. A., 1973, PROGR SOIL ZOOLOGY, P399