共 18 条
[2]
BJORKMAN O, 1960, ANN ROY AGR COLL SWE, V26, P1
[3]
BROWN WL, 1960, 792 NATL AC SCIN RES
[5]
COOPER JP, 1966, J APPL ECOL, V8, P191
[6]
EL-SHARKAWY M., 1965, CROP SCI, V5, P173, DOI 10.2135/cropsci1965.0011183X000500020024x
[7]
GRANT UJ, 1963, 1136 NATL AC SCIN RE
[8]
GROBMAN A, 1962, 915 NATL AC SCIN RES
[9]
HANWAY JJ, 1966, 48 IOW STAT U EXT SE
[10]
HATHEWAY WH, 1957, 453 NATL AC SCIN RES