共 16 条
[1]
Altieri M. A., 1986, Multiple cropping systems, P183
[2]
CRAMER C, 1985, FARMERS FERTILIZER H
[3]
DICKEY EC, 1986, CONSERVATION TILLAGE, V5
[4]
ELMORE R, 1984, CROP FOCUS 84, P9
[5]
Francis C., 1986, American Journal of Alternative Agriculture, V1, P159
[6]
Francis C. A., 1986, American Journal of Alternative Agriculture, V1, P65
[7]
FRANCIS CA, 1985, ENOUGH FOOD
[8]
FRANCIS CA, 1986, 1986 SEL P KANS STAT, P71
[9]
HALLBERG G, 1985, CE2158Q IOW STAT U C
[10]
HARWOOD RR, 1984, SUSTAINABLE AGR INTE, P64